MAINTENANCE MANUAL

GYROCOMPASS
TG-
TG-8000

SG12
SG12-SE005
SE005
Mar.. 21
Mar 21,, 201
20133

TOKYO KEIKI INC

CONTENTS

[1] MAINTENANCE INTERVAL-----------------

INTERVAL----------------------
---------------------------------
---------------- 1- 1
1. Maintenance and check interval------------
interval----------------------------
---------------------------- 1- 2
2. Recommendation of replacement parts-----------------------
parts----------------------- 1- 2

[2] MAINTENANCE AND CHECK----------------------

CHECK--------------------------
---------------------------------
----------- 2- 1
1. Internal parameter check-----------------------
check---------------------------
-----------------------------------
------------ 2- 2
2. Preparations---------------------------------------------
Preparations--------------------------------------------- 2- 3
check-
3. Step motor assembly check -------------------------------
------ -------------------------- 2- 7
check---------------------------
4. Brush and slip ring check -------------------------------
--------------------------- ---------
---- ----- 2-11
check-------------------------
5. Shock absorber check ---------------------------------
------------------------- -------------
-------- ----- 2-12
check--------------------
6. Sensitive element check ------------------------
-------------------- ----------------
---- ------------ 2-13
check-------------------------------
7. Damper oil check -----------------------------------
------------------------------- -----------
---- ------- 2-16
check---------------------------------------
8. Fuse & holder check --------------------------------------- 2-17
check------------
9. Output signals check ---------------------------------------
------------ --------------------------- 2-18
check---------------------
10. Start up sequence check ------------------------
--------------------- ------------
--- ----------
--------- -- 2-21
check-------------------
11. Operating panel check -----------------------
------------------- ------------------
---- -------------- 2-24
check---------------------------------------
12. Performance check --------------------------------------- 2-25
check----
13. Voltage check ------------------------------
---- ------------------------------
-------------------------- -------------
---- ----------
--------- - 2 -28
14.. Internal parameter check
14 check---------------------
-------------------------
--------------------- --------------
---- ---------- 2-32
* Attached sheet "GYROCOMPASS TG TG- -8000 CHECK SHEET".

[3] STEP MOTOR EXCHANGE--------------

EXCHANGE------------------
----------------------------------
-------------------- 3- 1
1. Preparations-------
Preparations---------------------------------------------
--------------------------------------------- 3- 2
exchange--------------------------------------
2. Step motor exchange -------------------------------------- 3- 3
[4] BRUSH (EXCHANGE) AND SLIP-
SLIP-RING CLEANING--------
CLEANING-----------
--------------
------ 4- 1
1. Preparations--------------------------------------------
Preparations-------------------------------------------- 4- 2
2. Shock absorber
absorber removal
emoval ---------------------
----------------------------------
---------------- 4- 4
3. Brush removal
emoval ---------------------------------------
-------------------------------------------
--------- 4- 5
4. Brush and slip-
slip-ring cleaning-
cleaning-------------------------
--------------------------
----------------------------
-------- 4- 6
5. Brush installation
nstallation-----------------------------------------
ation----------------------------------------- 4-10
6. Shock absorber installation
nstallation--------------
ation----------------
--------------------------
----------------
-----------------
------- 4-11

[5] SLIP-
SLIP-RING EXCHANGE-----------------
EXCHANGE-------------------
--------------------------
-----------
----------
-----------
-------- 5- 1
1. Preparations---------------------------------------------
Preparations--------------------------------------------- 5- 2
emoval
2. Sensitive element remov al-----------
al-------------
----------- -------------
-- ---------------------
----------- ---------- 5- 5
3. Shock absorber removal
emoval -----------------------
-------------------------
------
-------------
----------- 5- 7
4. Brush removal
emoval --------------------------------------
-------------------------------------------
----------
------ 5- 8
5. Slip-
Slip-ring exchange-----------------------------------
exchange-------------------------------------
----------------------------------------- ------ 5- 9
6. Brush and slip-
slip-ring cleaning-
cleaning-------
--------------------------------- 5-14
7. Brush installation
nstallation-
ation---------------
----------------------------------------- 5-18
nstallation
8. Shock absorber install ation----------------
ation ------------------
---------------- --------
-- --------
------ ----
-- ----
-- ------
-- ---- 5-19

[6] SENSITIVE ELEMENT EXCHANGE---------------------

EXCHANGE-----------------------
-------------------------
------
-----
--- 6- 1
1. Preparations--
Preparations---------------------------------------------
--------------------------------------------- 6- 2
2. Sensitive element removal
emoval---------------------------
al-----------------------------
----------------------------------
------- 6- 4
nstallation
3. Sensitive element installation----------------------
ation--------------------------
---------------------- ---------
---- ----- 6- 6
4. Sensitive element adjustment----
djustment------------------
--------------------
----------------------
----------
-----------
----- 6- 8

[7] HRZC PWB EXCHANGE-------------------

EXCHANGE---------------------
------------------------------------
----------------- 7- 1
1. Preparations---------------------------------------------
Preparations--------------------------------------------- 7- 2
removal---------------------------------------
2. HRZC PWB removal --------------------------------------- 7- 3
3. HRZC PWB installation
nstallation------------------------------------
ation-------------------------------------
------------------------------------- 7- 4
djustment
4. HRZC PWB adjust ment---
ment -------------------------------------
--- ---------------------------------- 7- 5

[8] PARTS DESIGN CHANGE HISTORY

AND THE POINT TO PAY SPECIAL ATTENTION.-
ATTENTION.------------- 8- 1
[1] MAINTENANCE INTERVAL

GYROCOMPASS
TG-
TG-8000

1-1
1. Maintenance and check interval
Perform “[2] MAINTENANCE AND CHECK” once a year.

2. Recommendation of replacement parts

Interval
Parts
Parts Parts
Parts No. Q’ty Remark
(Year)

SENSITIVE
2～3 10229409H 1
ELEMENT

10239379
BRUSH 2 and 1set
10239380

STEP MOTOR 6 10189046 1

BELT 6 10160030 1

Need following insulation separator

HRZC PWB 6 10169503 1 (tube).
20565709 Q’ty：1
10169109, includes insulation
separators (tube).
10169109
or
INVERTER PWB 6 1 10169537, need following insulation
(10169537)
separators (tube).
20565708 Q’ty：3
20565709 Q’ty：8

GPOWER PWB 6 10189517 1

FLEXIBLE WIRE
8 10169706 1
(EAST)

SLIP-RING 8 10169260 1

1-2
[2] MAINTENANCE AND CHECK

GYROCOMPASS
TG-
TG-8000

Record data to attached sheet

"GYROCOMPASS TG- TG-8000 CHECK SHEET"
SHEET"
TKS FORM CSA-
CSA-CK2056A
CK2056A

2-1
1. Internal parameter check
1-1. Internal parameter.

1-1-1. Press SET & ACK/ENT at the same time for more than 3 seconds.
This will enter into extended menu.
1-1-2. Record parameters.
Parameter : Standard value (Press SETorDISP and change it.)
1･A-1 1.1.U Damping gain: 00.75
2･ 1.2.F Azimuth servo gain: 01.00
3･ 1.3.S Horizontal servo gain: 01.00
4･ 1.4.u Leveling servo gain ratio: 00.50～01.00
5･ 1.5.L Ф offset: 00.00
6･ 1.6.t Θ offset: 00.00
7･ 1.7.G X pickup gain: 02.25
8･ 1.8.c Ks/H: 1.300
*9･ 1.9.r Maximum rate of turn: ***.*
*10･ 1.A.F Maximum deviation Azimuth servo: **.**
*11･ 1.b.S Maximum deviation horizontal servo: **.**
12･A-2 2.1.o Azimuth offset A: ***.*
13･ 2.2.O Azimuth offset B: 000.0
000.0 (No use)
use
14･ 2.3.h Zero cross Azimuth: 345.3 * Clear it only at the time
15･ 2.4.E Zero cross error width: 002.0 of overhaul in ▲ or ▼→ ENT.
16･ 2.5.y Year: ****
17･ 2.6.N Month, Day: **.** ※ Clear it only at the time
18 2.7.t Hour, minute: **.** of overhaul in SET→
ET → ENT.
*19･ 2.8.d Total operating days: ****
20･ 2.9.G Display/setting of GPS connection: **
21･ 2.A.L Display/setting of LOG connection: **
22･ 2.b.S Display/setting of LOG(serial) connection: **
23･ 2.c.t Display/setting of "GGA" performance index is ignored or evaluated: **
24･ 2.d.o Analog output offset for rate of turn: ***.*
25･ 2.e.F Filter time constant for rate of turn: ***.* （Push ▲ and change it.）
26･ 2.F.G Analog output gain for rate of turn: *.*** Err
※27･A-3 3.1.E Alarm(Error): ↓
*28･ 3.2.n Zero cross error number of occurrences: **** Y 2011 (2011:ｙear）
*29･ 3.3.H Zero cross error maximum: ***.* ↓
*30･ 3.4.y Zero cross error occurrences year: **** 0217 (2:month 17:day）
*31･ 3.5.N Zero cross error occurrences month day: **.** ↓
*32･ 3.6.t Zero cross error occurrences hour minute: **.** 0912（9:hour Rotor
*33･ 3.7.n Encoder error number of occurrences: **** inclination abnormal.)
Error code
*34･ 3.8.r SCC reset number of occurrences: ****
35･A-7 7.2.t SCC Software version: *.*** Record more than most
36･ 7.3.u MCC Software version: *.*** recent ten errors.
37.A-8 8.3.L Rotor tilting angle monitor: **.**
38 8.4.t Master compasses temperature: ***.*（Below 65℃）
Fig. 2-
2 -1 Internal parameter display
1-1-3. Press SET & ACK/ENT at the same time for more than 3 seconds.
This will return to normal mode.

2-2
2. Preparations

2-1. Press DISP+ SET on the operation panel, then turn on the POWER (Test mode b).
Wait until the phantom ring turns for 360 degrees. Wait up to 4 minutes until the rotor in the
sensitive element stops spinning.

2-2. Turn off the POWER.

PR-6000 stand

TG-8000 Operation panel

Fig. 2-
2 -2 PR-
PR-6000 stand and TG-
TG-8000 operation panel

2-3
2-3. In case TG-8000 master compass is in PR-6000 stand, remove the master compass from PR-6000.

PR-6000 stand PR-6000 stand

TG-8000 master compass

Remove screws (4pcs) and cover

Remove screws (3pcs) and take out whole
TG-8000 master compass unit

2-4. Remove 4 screws “A”～“D” and remove the case of TG-8000 master compass.

C D
TG-8000 master Compass

Case

Case

TG-8000 master Compass

A B

Fig. 2-
2 -3 PR-
PR-6000 stand and TG-
TG-8000 master Compass

2-4
☆ If sensitive element is not replaced, proceed to 「3. Step motor assembly check」
check」

☆ 2-5. Rotate the phantom ring until the connector comes to the front as shown in the picture.

Phantom ring

☆ 2-6. Remove 4 screws “E”～“H”.

Loosen screw “I” to remove the connector.

Connector
F
H

Fig. 2-
2 -4 Phantom ring and sensitive element

2-5
☆ 2-7. Grab the neck of sensitive element firmly as shown in the picture and take it out from the
mounting ring.

Mounting Take out

ring

Fig. 2-
2 -5 Mounting ring and sensitive element

2-6
3. Step motor assembly check
If step motor
motor exchange is necessary,
refer to “[3] STEP MOTOR EXCHANGE”

3-1. Take out nuts (all 4 corners), remove the shock absorbers.

Nut (all 4 corners )

Put the hook in the CUP (all 4 corners)

Fig. 2-
2 -6 Shock absorber

2-7
3-2. Step motor axis rotation should be smooth.

The step motor

3-3. Tension pressure of step motor assembly belt should be appropriate

and the belt should move smoothly.

Belt

Tensioner

Fig. 2-
2 -7 Step motor assembly

2-8
3-4. Azimuth double gears check.

3-4-1. Hold the damper of the step motor, so that one side of the Azimuth gears do not move.

Damper of the step motor

3-4-2. The play of phantom ring (azimuth double gears) (CW/CCW) should be about 0.1°
Check the play of azimuth double gears at phantom ring position : 0/90/180/270°(4 points).

Move Phantom ｒing to CW/CCW

Azimuth double gear

Fig. 2-
2-8(1) Phantom ring (azimuth double gears) play check

2-9
No
lubrication Azimuth double gears
4 teeth differential tension

Fig. 2-
2-8(2) Azimuth double gears
gears

2 - 10
4. Brush and slip-
ip-ring
ring check
If brush(exchange) and slip-
slip-ring cleaning is necessary,
refer to “[4] BRUSH (EXCHANGE) AND SLIP- SLIP-RING CLEANING“.

If slip-
slip-ring exchange is necessary,
refer to “[5“[5] SLIP-
SLIP-RING EXCHANGE “.
“.

4-1. Brush head should be firmly in contact with slip-ring rotor.

4-2. Slip-ring and brush should be clean.

Brush head (all 16 points)

Fig. 2-
2 -9 Brush and sl
slip-
ip-ring

2 - 11
5. Shock absorbers
absorbers check

5-1. Install the shock absorbers.

5-1-1. Put back the shock absorbers, fasten nuts at all 4 corners.

Nut (all 4 corners)

5-2. All the shock shock absorbers should move smoothly.

Check if properly assembled

Fig. 2-
2-10 Shock
hock absorbers
absorbers

2 - 12
6. Sensitive element check
If sensitive element exchange is necessary,
refer to “[6
“[6] SENSITIVE ELEMENT EXCHANGE“.

6-1. Sensitive element should not have oil leakage.

6-2. Sensitive element connector should be firmly in contact.

Firmly in contact.
No space, gap.

Fig. 2-
2 -1 1 Sensitive element connector

6-3. Sensitive element should tilt about 15～20 degrees with no power.

About 15～20 About 15～20

degrees (N-up degrees (S-up
position) position)

Fig. 2-
2 -1 2 Sensitive element tilt (N/S-
(N/S-up position)

2 - 13
6-4. Sensitive element should move smoothly until it hits the stopper in both directions (N-up､S-up).

N-up S-up

Fig. 2-
2 -1 3
6-5. Flexible lead wire should be shaped in line and do not have friction. Sensitive element
N/S-
N/S-up directions

Flexible lead wire

6-6. Horizontal ring should move smoothly until it hits the stopper in both directions (E-up､W-up).

Horizontal Horizontal
ring ring
(E-up) (W-up)

Fig. 2-
2-14(1) Sensitive element E/
E/W-up directions

2 - 14
6-7. Flexible lead wire should be shaped.

Flexible lead wire

Fig. 2-14(2) Sensitive element E/

E/W-up directions

6-8. Phantom ring should turn smoothly while azimuth rotate for more than 360 degrees.

Phantom ring.

Fig. 2-
2 -1 5 Phantom ring

2 - 15
7. Damper oil check

7-1. Damper oil should be filled in half of the case.

Damper oil

10160162-
100,000cSt/10cc

Fig. 2-
2 -1 6 Damper oil

2 - 16
8. Fuse & holder check

8-1. INV. PWB F1(12A) fuse & holder should not be debased, burnout, poor contact.

Ｆ１(12A)

Fig. 2-
2 -1 7 INV. PWB fuse

8-2. F101(6.3A) & holder should not be debased, burnout or poor contact.
8-3. F102(20A) & holder should not be debased, burnout or poor contact.
8-4. GTERM PWN F1～F14(1A) & holder should not be debased, burnout or poor contact.
8-5. GTERM PWB F15(15A) & holder should not be debased, burnout or poor contact.
8-6. GTERM PWB F16(3.16A) & holder should not be debased, burnout or poor contact.

F101
Input power(AC)
F15
F16 F102
Input power（DC）

F1～F14

Fig. 2-
2 -1 8
GTERM PWB and input power fuse

2 - 17
9. Output signal check

9-1. Step and serial signals

9-1-1. Press DISP+ SET on the operating panel, then turn on the POWER (Test mode b).
9-1-2. Set 0/90/180/270°by ▲/▼ then press ACK/ENT
9-1-3. Step signals reception machinery (repeater compass) should follow-up within ±0.5°.
9-1-4. Equipment which receive serial signals from the GYRO should follow-up the azimuth within ±0.5°.

Adjust the brightness

Fig. 2-
2 -1 9 Repeater
Repeater compass

9-2. Brightness of the light should be adjusted on the repeater compass.

9-3. Turn off the POWER.

2 - 18
9-4. ROTI signals

9-4-1. Press ACK/ENT+▼ on the operating panel at the same time, then turn on the POWER.
(ROTI mode).
9-4-2. Press SET, Set to 0 deg/min ､P/S 20 deg/min by ▲/▼, then press ACK/ENT.
9-4-3. Output signals should follow-up within 0±0.5 deg/min､P/S 18.5～21.5 deg/min.
⇒Adjustment point MIFC/MCOIF PWB VR1/gain and VR2/offset.

Fig. 2-
2-20 Rate
Rate of turn indicator (ROTI)

2 - 19
 MIFC PWB
VR1/gain
VR2/offset

MCOIF PWB
VR1/gain
VR2/offset

Fig. 2-
2-21
9-4-4. Turn off the POWER. MIFC PWB
and MCOIF PWB

2 - 20
 10. Start up sequence check

10-1. All the sequence should be normal in “last azimuth finding”, “sensitive element standing up”, “rotor
revolution“ and “follow-up” motion.
10-1-1. Turn on the POWER.
↓8～240 seconds. The brake is applied to the rotor until it stops.
10-1-2. Last azimuth finding motion starts. The phantom ring rotates for 360°.
↓0 second.
10-1-3. Sensitive element should stand up.

(1) Keep your eyes at certain position to observe the horizontal ring reference line and sensitive
element top reference line.

You eye
position
position
of eye
Horizontal ring S/E top
Make height same reference line reference line
as Horizontal ring
reference line

Fig. 2-
2-22 You eye position in relation to horizontal ring reference line
(2) Criteria

Good Good
S/E
S/E inclination
inclination limit angle
limit angle
Horizontal ring Horizontal ring
reference line reference line

Bad Bad

Fig. 2-
2-23 Sensitive element inclination limit in relation to horizontal ring reference line

2 - 21
 (3) Example : Good condition
(Sensitive element top reference line is almost parallel to horizontal ring reference line.)
・Sensitive element inclination angle is small enough as shown in Fig. 2-24.
・Stable and no vibration.

Good
Good

Fig. 2-
2-24 Good alignment of sensitive element at the beginning of leveling mode

(4) Example : Bad condition

・Sensitive element inclination angle is bigger as shown in Fig. 2-25.
・Vibrate.

Bad Bad

Fig. 2-
2-25 Bad alignment of sensitive element at the beginning of leveling mode

2 - 22
 (5) In case of bad condition(alignment) shown in Fig. 2-25.
・Turn off the POWER.
・VR1 (gain) and VR2 (span) on HRZC PWB to be center position as show in Fig. 2-26.
・Start over from item 10-1-1.

HRZC PWB

VR 2 VR 1
(Span) (Gain)

Limit;
VR1 / VR2 Max. (CW) position

Keep to
to be
center position

Fig. 2-
2 -2 6 Limit;
VR1 and VR2 on HRZC PWB Min. (CCW) position

< Caution >

Do not turn the trimmer more than the limits (Max. (CW) or Min. (CCW)).
Otherwise the trimmer and HRZC PWB will be broken.

↓60～172 seconds. (Until ACK/ENT key is pressed.)

10-1-4. Sensitive element rotor starts rotating.
↓120 seconds.
10-1-5. Follow-up start of horizontal and azimuth. (Setting start. GYRO LED light up)
Sensitive element should not have abnormal noise or vibration.

2 - 23
11. Operating panel check

11-1. POWER switch ON/OFF movement should be normal.

11-2. LAMP TEST(▲+▼) should light up all LED.

11-3. Brightness of LED light should be able to adjust by (▲/▼).

11-4. The following indicate check. (Press DISP and change it.)
11-4-1. ｢S.S.G./S.S.E
S.S.G./S.S.E/GYt
S.S.G./S.S.E/GYt｣(TRUE)
/GYt should be able to indicate.
11-4-2. ｢E.S
E.St
E.St./GYt
./GYt｣(EXT｣)
Yt should be able to indicate.
11-4-3. ｢C
C.P.S.｣(COMPASS)
S. should be able to indicate.
11-4-4. ｢LA.n./LA.S.
LA.n./LA.S.｣(LATITUDE)
LA.n./LA.S. should be able to indicate.
11-4-5. ｢G.Sd/H.Sd/L.Sd/S.Sd
G.Sd/H.Sd/L.Sd/S.Sd｣(SPEED)
G.Sd/H.Sd/L.Sd/S.Sd should be able to indicate.
11-4-6. ｢rrt.｣(TURN) should be able to indicate.
11-4-4. ｢Err
Err｣
Err should be able to indicate.

Fig. 2-
2-27 Operating
Operating panel

2 - 24
 12. Performance check

12-1. Performance

12-1-1. Turn on the POWER.

12-1-2. True bearing should be steady (within 0.7°) within 3～4 hours after start.

Start
Up
3h

Steady

Fig. 2-
2-28 Gyrocompass
Gyrocompass settl
settling
tling time

12-2. Confirm the bubble position of the levels at the horizontal ring and the rotor.

12-2-1. Air bubble position of the horizontal ring level should be almost at the center.
(Guideline within ±5 minutes / 1 division is 2 minutes )

⇒Adjustment point refer to “[6

“[6] SENSITIVE ELEMENT EXCHANGE”

12-2-2. Air bubble of rotor level should be almost the center.

(Guideline within ±14 minutes / 1 division is 4 minutes)

⇒Adjustment point 「Θoffset 1.6.t」of internal parameter.

Example::
Example
・When input 「Θ offset “0.16”」, move to N-up 10 minutes.
・When input 「Θ offset “-0.16”」, move to S-up 10 minutes.

2 - 25
 Horizontal ring level

Rotor level

Fig. 2-
2-29 Rotor level and horizontal
horizontal ring level

Rotor level Center

-14 minutes (Limit)

+14 minutes (Limit)

Center

Fig. 2-
2-30 Rotor level

2 - 26
 Horizontal ring level
Center

+5 minutes (Limit) -5 minutes (Limit)

Fig. 2-
2-31 Horizontal ring level

12-3. Phantom ring should not be start vibration, when you hit the shock absorber by hand.
⇒Adjustment point 「azimuth servo gain 1.2.F」of internal parameter.

Example:
Example:
・If start vibration, 「azimuth servo gain down to “0.5～0.7”」.

Phantom ring

Shock absorbers

Fig. 2-
2-32 Shock absorbers
absorbers

2 - 27
13. Voltage check

13-1. Main power supply should be AC100/220V ±10%.

Back-up power supply should be DC24V -20%～+30%.

Main power supply

Back-up power supply

Fig. 2-
2 -3 3 Input power supply terminal

13-2. Master compass power supply (MTTRM PWB TB1-1/2) should be DC24V ±2V.
⇒Adjustment point GPOWER PWB VR1

Fig. 2-
2-34 Master compass terminal
terminal MTTRM PWB
TB1-1/2

2 - 28
 GPOWER PWB
VR1

Fig. 2-
2-35 GPOWER PWB

13-3. Repeater compass power supply (GTERM PWB ST14/ST15) should be DC24V ±4V.

GTERM PWB ST14(60)/ST15(61)

Fig. 2-
2 -3 6 GTERM PWB

2 - 29
13-4. Measure the voltage and frequency of the sensitive element's power supply.

13-4-1. Confirm the voltage of phantom ring terminal # 5 and 6.

13-4-2. If the tester (multi-meter) is Vrms type : AC100Vrms ±2Vrms､
±2Vrms､400Hz ±2Hz
±2Hz
If the tester (multi-meter) is Vavg(average) type : AC110Vavg
AC110Vavg ±2Vavg
±2Vavg､
avg､400Hz ±2Hz
⇒Adjustment point INV. PWB VR1(Voltage).

Phantom ring terminal No.5-6

Fig. 2-
2-37 Phantom ring terminal.

CAUTION: How to check the tester (multi-meter) type

☆Adjust the voltage between TP9(0V) and TP10 to DC101V by INV PWB VR1.
☆Measure the voltage between CN4 6and 7.
･In case the reading is AC100V, the tester is Vrms type.
･In case the reading is AC110V, the tester is Vavg(average)
avg type.

TP9

TP10

VR1 CN4 6-7

Fig. 2-
2 -3 8 INV. PWB

2 - 30
13-5. Turn off the POWER.

13-6. Press DISP+ SET on the operating panel, then turn off the POWER (Test mode b).
Wait until the bearing will rotate 360 degrees. Wait up to 4 minutes until the rotor in the sensitive
element stops spinning.

13-7. Turn off the POWER.

13-8. Put back the TG-8000 case which was removed in step ｢2-4｣

13-9. Put back TG-8000 master compass to PR-6000, Refer to step ｢2-3｣

13-10. Turn on the POWER.

2 - 31
14.
14. Internal parameter check

14-1. Press SET & ACK/ENT at the same time for more than 3 seconds.
This will enter into extended menu.
14-2. Record parameters. (Only record the change
changes
hanges you made for step 1-
1-1-2.)
2.)
Parameter : Standard value (PushSETor DISP and change it.)
1･A-1 1.1.U Damping gain: 00.75
2･ 1.2.F Azimuth servo gain: 01.00
3･ 1.3.S Horizontal servo gain: 01.00
4･ 1.4.u Leveling servo gain ratio: 00.50～01.00
5･ 1.5.L Ф offset: 00.00
6･ 1.6.t Θ offset: 00.00
7･ 1.7.G X pickup gain: 02.25
8･ 1.8.c Ks/H: 1.300
9･ 1.9.r Maximum rate of turn: **.**
10･ 1.A.F Maximum deviation Azimuth servo: **.**
11･ 1.b.S Maximum deviation horizontal servo: **.**
12･A-2 2.1.o Azimuth offset A: ***.*
13･ 2.2.O Azimuth offset B: 000.0
000.0 (No use)
use)
14･ 2.3.h Zero cross Azimuth: 345.3
15･ 2.4.E Zero cross error width: 002.0
16･ 2.5.y Year: ****
17･ 2.6.N Month, Day: **.**
18 2.7.t Hour, minute: **.**
19･ 2.8.d Total operating days: ****
20･ 2.9.G Display/setting of GPS connection: **
21･ 2.A.L Display/setting of LOG connection: **
22･ 2.b.S Display/setting of LOG(serial) connection: **
23･ 2.c.t Display/setting of "GGA" performance index is ignored or evaluated: **
24･ 2.d.o Analog output offset for rate of turn: ***.*
25･ 2.e.F Filter time constant for rate of turn: ***.*
26･ 2.F.G Analog output gain for rate of turn: *.***
27･A-3 3.1.E Alarm(Error):
28･ 3.2.n Zero cross error number of occurrences: ****
29･ 3.3.H Zero cross error maximum: ***.*
30･ 3.4.y Zero cross error occurrences year: ****
31･ 3.5.N Zero cross error occurrences month day: **.**
32･ 3.6.t Zero cross error occurrences hour minute: **.**
33･ 3.7.n Encoder error number of occurrences: ****
34･ 3.8.r SCC reset number of occurrences: ****
35･A-7 7.2.t SCC Software version: *.***
36･ 7.3.u MCC Software version: *.***
37.A-8 8.3.L Rotor tilting angle monitor: **.** Fig. 2-
2-39 Internal parameter display
38 8.4.t Master compasses temperature: ***.*

1-1-3. Press SET & ACK/ENT at the same time for more than 3 seconds.
This will return to normal mode.

2 - 32
 GYROCOMPASS TG-8000 Check Sheet [Maintenance]

Ship's Name Which Gyro Single No.1 No.2

IMO No. M/C Ser. No.

Engineer S/E Ser. No.

Date

1. Parameter : (Standard value) Data record --> (Any changed data)

Press [SET]&[ACK/ENT]
1) A-1 1.1.U Damping gain : 00.75 1.1.U
2) 1.2.F Azimuth servo gain : 01.00 1.2.F
3) 1.3.S Horizontal servo gain : 01.00 1.3.S
4) 1.4.u Leveling servo gain ratio 00.50 ~ 01.00 1.4.u
5) 1.5.L Φ offset : 00.00 1.5.L
6) 1.6.t Θ offset : 00.00 1.6.t
7) 1.7.G X pickup gain 02.25 1.7.G
8) 1.8.c Ks/H : 1.300 1.8.c
9) 1.9.r Maximum rate of turn : * * *.* 1.9.r
10) 1.A.F Maximum deviation Azimuth servo : * *.* * 1.A.F
11) 1.b.S Maximum deviation horizontal servo : * *.* * 1.b.S

12) A-2 2.1.o Azimuth Offset A : * *.* * 2.1.o

13) 2.2.O Azimuth offset B : 00.00 (No use) 2.2.O
14) 2.3.h Zero cross Azimuth : 345.3 2.3.h
15) 2.4.E Zero cross error width : 002.0 2.4.E
16) 2.5.y Year : * * * * 2.5.y
17) 2.6.N Month, Day : mm.dd 2.6.N
18) 2.7.t Hour, minute : hh.mm 2.7.t
19) 2.8.d Total operating days : * * * * 2.8.d
20) 2.9.G Display/setting of GPS connection : * * 2.9.G be Non
21) 2.A.L Display/setting of LOG connection : * * 2.A.L be Non
22) 2.b.S Display/setting of LOG(serial) connection : * * 2.b.S be Non
23) 2.c.t Display/setting of "GGA" performance : * * 2.c.t be Non
24) 2.d.o Analog output offset for rate of turn : 000.0 2.d.o
25) 2.e.F Filter time constant for rate of turn : 002.0 2.e.F
26) 2.F.G Analog output gain for rate of turn : 01.00 2.F.G

27) A-3 3.1.E Alarm (Error) 3.1.E (Record to item 2)

28) 3.2.n Zero cross error number of occurrences : * * * * 3.2.n
29) 3.3.H Zero cross error maximum : * * *.* 3.3.H
30) 3.4.y Zero cross error occurrences year : * * * * 3.4.y
31) 3.5.N Zero cross error occurrences month day : * *.* * 3.5.N
32) 3.6.t Zero cross error occurrences hour minute : * *.* * 3.6.t
33) 3.7.n Encoder error number of occurrences : * * * * 3.7.n
34) 3.8.r SCC reset number of occurrences : * * * * 3.8.r

TKS FORM CSA-CK2056A TOKYO KEIKI INC. (1/3)

 Data record --> (Any changed data)
35) A-7 7.2.u SCC Software version : *.* * * 7.2.u
36) 7.3.u MCC Software version : *.* * * 7.3.u

37) A-8 8.3.L Rotor tilting angle monitor: * *.* * 8.3.L

38) 8.4.t Master compasses temperature: * * *.* 8.4.t

2. Error code check : A-3 3.1.E Alam(Error)

Record it more than most recent ten.
Year Month Day Hour Error code
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)

3. Step motor assembly check Result / Measures

1) Step motor axis should move smoothly. Good / Adjust / Replace
2) Phantom ring play (CW/CCW) should be about 0.1deg. Good / Adjust / Replace

4. Slip-ring and Brush check

1) Brush head should be firmly in contact with slip-ring rotor. Good / Adjust / Replace
2) Slip-ring and brush should be clean. Good / Adjust / Replace

5. Shock absorber check

1) Shock absorber should move smoothly. Good / Adjust / Replace

6. Sensitive element check

1) Sensitive element should not have oil leakage. Good / Adjust / Replace
2) Sensitive element connector should be firmly in contact. Good / Adjust / Replace
3) Sensitive element should tilt about 15 ~ 20 deg without power supply. Good / Adjust / Replace
4) Sensitive element should move smoothly until it hits the stopper Good / Adjust / Replace
in both directions(N-up, S-up).
5) Horizontal ring should move smoothly until it hits the stopper Good / Adjust / Replace
in both directions(E-up, W-up).
6) Phantom ring should turn smoothly while azimuth rotate for more Good / Adjust / Replace
than 360 deg.

TKS FORM CSA-CK2056A TOKYO KEIKI INC. (2/3)

7. Damper oil check Result / Measures
1) Damper oil should be filled in about half of the case. Good / Adjust / Replace

8. Fuse & Holder check

1) INV. PWB F1(12A) should not be debased, burnout, poor contact. Good / Adjust / Replace
2) F101(6.3A) and F102(20A) should not be debased, burnout, poor contact. Good / Adjust / Replace
3) GTERM PWB F1 ~ F14(1A) should not be debased, burnout, poor contact. Good / Adjust / Replace
4) GTERM PWB F15(15A) and F16(3.16A) should not be debased burnout, Good / Adjust / Replace
poor contact.

9. Output signals check

1) Step signal reception machinery (repeater compass) should follow-up . Good / Adjust / Replace
within +/-0.5deg.
2) Equipment which receive signal from the GYRO, should follow-up Good / Adjust / Replace
the azimuth within +/-0.5.
3) Brightness of the light should be adjusted on the repeater compass. Good / Adjust / Replace
4) ROTI output signal should follow-up within 0+/-0.5deg/min, Good / Adjust / Replace
P/S 18.5 ~ 21.5deg/min.

10. Start Up sequence check

1) Last azimuth ~ rotor rotaing ~ follow-up start should be normal. Good / Adjust / Replace

11. Operating panel check

1) POWER switch ON/OFF movement should be normal. Good / Adjust / Replace
2) LAMP TEST(▲ / ▼) should light up all LED. Good / Adjust / Replace
3) Brightness of LED light should be able to adjust by (▲ / ▼). Good / Adjust / Replace
4) [S.S.G/S.S.E/GYt/ESt], [C.P.S], [LA.n/LA.S], [G.Sd/H.Sd/L.Sd/S.Sd], [rt.] Good / Adjust / Replace
and [Err] should be able to indicate.

12. Performance check

1) True bearing should be steady (within 0.7deg) within about 3 ~ 4 hours Good / Adjust / Replace
after start.
2) Air bubble of horizontal ring levels should be almost the center. Good / Adjust / Replace
(guideline within +/-5 min)
3) Air bubble of rotor levels should be almost the center. Good / Adjust / Replace
(guideline within +/-14 min)
4) Phantom ring should not be vibration, when a shock is given to Shock Good / Adjust / Replace
absorber.

13. Voltage check

1) Main power supply should be AC100/220V +/-10%. Good / Adjust / Replace
2) Back-up power supply should be DC24V -20% ~ +30%. Good / Adjust / Replace
3) Master compass power supply (MTTRM PWB TB1-1/2) Good / Adjust / Replace
should be DC24V +/-2V.
4) Repeater compass power supply (GTERM PWB ST14/ST15) Good / Adjust / Replace
should be DC24V +/-4V.
5) Phantom ring Terminal 5/6(sensitive element) should be Good / Adjust / Replace
AC100Vrms +/-2Vrms (AC110V +/-2V avg).

TKS FORM CSA-CK2056A TOKYO KEIKI INC. (3/3)

[3] STEP MOTOR EXCHANGE

GYROCOMPASS
TG-
TG-8000

3-1
1. Preparations

1-1. Required parts and tools

1-1-1. Step motor 10189046 (1pc)

1-1-2.Belt 10160030 (1pc)

1-1-3. Phillips screw driver : regular size (1pc)

1-1-4. Hexagon wrench 3mm (1pc)

1-1-5. Hexagon wrench 4mm (1pc)

Fig. 3-
3-1 Required parts and tools

3-2
2. Step motor exchange

2-1. Remove plate and screws “A”～“D”.

Ａ Ｃ

Ｂ Ｄ

plate

Fig. 3-
3 -2 Step motor assembly plate

2-2. Remove screws “E”～“H”.

E G

H
F
Fig. 3-
3 -3 Step motor assembly

2-3. Remove connector and screw “I”.

Connector

Fig. 3-
3 -4 SMCC
SMCC PWB

3-3
2-4. Remove belt.

Belt

Fig. 3-
3 -5 Belt

2-5. Loosen screws “J”～“N”. Remove pulley “O” and damper.

J L
Damper

K M

Pulley O

Fig. 3-
3 -6 Damper and pulley
pulley

3-4
2-6. Remove “O”～“R” screws. Remove step motor (old).

O Q

Step motor (old)

P R

Fig. 3-
3-7(1) Step motor (old)

2-7. Install the step motor (New). Install the “O”～“N” screws.

O Q

Step motor (New)

P
R

Fig. 3-
3-7(2) Step motor (new)

3-5
 2-8. Install the pulley “O” and damper which removed with ｢2-4｣.
Install the temporary screw “J”～“N”.

J L
Damper

Encoder
N
Pulley O

Pulley P
K M

Fig. 3-
3 -8 Damper and pulley
pulley

2-8-1. Make sure that one of the

screws “L”,“M” and ”N” has
to be secured on the flat
face side of the step motor.

2-8-2. While turning a damper, adjust pulley “O” position so that belt position to become the center of
pulley “P”.
2-8-3. Tighten screw “J” ～ “N”. (Damper, Encoder and pulley “O” should be in contact.)

Damper

In contact.
contact.
No space, gap. Encoder
Pulley P
Belt position to become Pulley O
the center of pulley “P”.
Adjust pulley “O”
The same interval
Belt position to Up or down.

Fig. 3-
3 -9 Belt
Belt and pulley
pulley position

3-6
2-9. Upper gear of azimuth double gears should have 4 teeth worth of tension before engaging
with a small drive gear.

Small drive gear. Azimuth double gears

No 4 teeth differential tension
No
Lubrication Lubrication

2-10. Install step motor assembly while keeping 4 teeth tension to small driver gear. Fasten the screws “E”
～“H” temporarily, but not firm. You need final tightening after step 2-12.

E G

F H

Fig. 3-
3-10 Azimuth
Azimuth double gears and step motor assembly

3-7
2-11. Hold the damper of the step motor, so that one side of the azimuth gears do not move.

Belt

Damper

2-12. The play of phantom ring (azimuth double gears) (CW/CCW) should be about 0.1°.
Check the play of azimuth double gears at phantom ring position : 0/90/180/270°(4 points).

Move Phantom ｒing to CW/CCW

Fig. 3-
3 -1 1 Phantom ring (azimuth double gears) play check

2-13. Fasten screws “E”～“H” which were installed in step ｢2-10｣.

2-14. Install plate and screws “A”～“D” of step ｢2-1｣.

2-15. Install connector and screws “I” of step ｢2-3｣.

3-8
[4] BRUSH (EXCHANGE)
AND SLIP-
SLIP-RING CLEANING

GYROCOMPASS
TG-
TG-8000

4-1
1.Preparations

1-1.Required parts and tools

1-1-1. Brush 10239379､10239380 (1set)

1-1-2. Adjustable wrench (1pc)

1-1-3. Phillips screw driver : small size (1pc)

1-1-4. Cotton bud (about 5～6 pcs)

Fig. 4-1(1) Required

Required parts and tools

4-2
1-1-5. Cotton tape (about 300cm)

The cotton tape is cut in the length of about 60～70cm. (Three to four tapes needed.)

1-1-6. Protective solution ｢WD-40｣ (small amount)

Don’t spray the solution.

Use cotton bud and dip in the solution.

In container

Fig. 4-1(2) Required parts and tools

4-3
2. Shock absorber removal
emoval

2-1. Take out nuts (all 4 coners), remove the shock absorbers.

Nut (all 4 coners)

Put the hook in the CUP (all 4 coners)

Fig. 4-2 Shock absorbers

absorbers

4-4
3. Brush removal
emoval

3-1. Remove terminal 8, M, G, B, 10, H, A, D.

3-2. Remove screw A & B and take off brushｅｓ.

Ａ Ｂ

Brush tip not to give

damage and remove it
(with 16 places).

Fig. 4-3 Brush and sl

slip ring

4-5
4. Brush and slip-
lip-ring cleaning
4-1. Clean all the tips of each brush by using soft kind toothbrush or a cotton bud.

Note:
・Do not use any cleaning solution.
・The toothbrush must be the type with the soft hair materials.
・The spring pressure may change when you add too much power to each brush. Please hold the
arm while you gently clean each tip of the brushes.
・Please make sure that there are no remaining hair or debris of cotton bud.

Fig. 4-4 Brush cleaning

4-6
4-2. Clean entire rings of the Slip-ring, and all layers with cotton tape or a cotton bud.

Note:
・Do not use any cleaning solution.
・Clean the edges of the Slip-ring. Refer to “A”
A”
・Please make sure that there are no remaining hair or debris of cotton bud.

Clean while pulling cotton tape

with both hands.

“A” Clean the edges, too.

Fig. 4-5 Slip-

ip-ring

4-7
4-3. Wet the cotton bud with “WD-40”

Note:
・Do not blow to the Slip-ring/brush directly if "WD-40" is a spray can type.
・Take a small amount of liquid from the “WD-40” spray can in the plastic cap.

Fig. 4-
4-6(1) Wet cotton bud and slip-
slip-ring
ring

4-8
4-4. Coating all layers of the Slip-ring with the cotton bud after dipping in "WD-40" liquid.

Note:
・Please make sure that there are no remaining hair or debris of cotton bud.

Fig. 4-
4-6(2) Wet cotton bud and slip-
slip-ring

4-9
 5. Brush installation
installation

5-1. Put back the brushes to the place, where removed in ｢3-1/3-2｣.
Caution should be taken so that the brush tips (16) should not be damaged during installation.

5-2. The brush head should be firmly in contact with slip ring rotor.

Brush head (all 16 points)

5-3. Check the following connections.

A --------------- ①
D --------------- ②
Brush terminal M --------------- ③ MCC PWB J2
B --------- ------④
H --------------- ⑤
10 --------------- ⑨ MCC PWB J5
8 --------- ------ ⑩
G --------- ----- “G” MCC PWB “G”

MCC PWB “G”

Brush terminal
MCC PWB Ｊ2
① ③ ⑤
② ④

Fig. 4-
4-7 Brush terminal
erminal connections
MCC PWB Ｊ5
① ③ ⑤ ⑦ ⑨
② ④ ⑥ ⑧ ⑩

4 - 10
6. Shock absorber
absorber installation
nstallation

6-1. Put back the shock absorbers, fasten nuts at all 4 corners.

Nut (all 4 corners)

6-2. All the shock shock absorbers should move smoothly.

Check if properly assembled

Fig. 4-8 Shock absorbers

absorbers

4 - 11
[5] SLIP-
SLIP-RING EXCHANGE

GYROCOMPASS
TG-
TG-8000

5-1
1. Preparations

1-1. Required parts and tools

1-1-1. Slip-ring 10169260 (1pc)

Fig. 5-1(1) Required part and tools

5-2
1-1-2. Soldering iron & Solder (1set)

1-1-3. Adjustable wrench (1pc)

26mm

1-1-4. Phillips screw driver : small size (1pc)

1-1-5. Cotton bud (about 5～6 pc)

Fig. 5-1(2) Required part and tools

5-3
1-1-6. Cotton tape (about 300cm)

Cotton tape is cut in the length of about 60～70cm. (Three to four tapes needed.)

1-1-7. Protective solution ｢WD-40｣ (small amount)

Don’t spray the solution.

Use cotton bud and dip in the solution.

In container

Fig. 5-1(3) Required part and tools

5-4
2. Sensitive element removal
emoval

2-1. Rotate the phantom ring until the connector comes to the front as shown in the picture.

Phantom ring

2-3. Remove 4 screws “A”～“D”. Loosen screw “E” to remove the connector.

B Connector
D

Fig. 5-2 Phantom ring and sensitive element

5-5
2-4. Grab the neck of sensitive element firmly as shown in the picture and take it out from the
Mounting ring.

Mounting
ring Take out

Fig. 5-3 Mounting ring and sensitive element

5-6
3. Shock absorber removal
emoval

3-1. Take out nuts (all 4 corners), remove the shock absorbers.

Nut (all 4 corners)

Fig. 5-4 Shock absorber

5-7
4. Brush removal
emoval

4-1. Remove terminal 8, M, G, B, 10, H, A, D.

4-2. Remove screw “F”&“G” and take off a brush.

F G

Brush tip not to give

damage and remove it
(with 16 places).

Fig. 5-5 Brush and sl

slip-
ip-ring

5-8
5. Slip-
Slip-ring exchange

5-1. Remove screw ”H“&”I“ and take off lead with solder ”J“～”M“.

J
H

5-2. Remove RELAY PWB

RELAY PWB

Fig. 5-
5 -6 RELAY PWB

5-9
5-3. Loosen screw “N” and remove screw “O”

N
O

5-4. Remove slip-ring.

Slip-ring

Fig. 5-7(1) Slip-

ip-ring

5 - 10
5-5. Remove “P”&”Q” screws and remove slip-ring (old).

Slip-ring (old)

5-6. Install slip-ring (new) and install “P”&“Q” screws.

Slip-ring (new)

Fig. 5-7(2) Slip-

ip-ring

5 - 11
5-7. Install slip-ring (new).

Slip-ring (new)

5-8. Install screw “N” and screw “O”

Fig. 5-7(3) Slip-

ip-ring

5 - 12
5-9. Install lead with solder ”J“～”M“and install screw ”H“～”I“.

J
H

RELAY PWB

G
A
H
DBAG 8 10 M H B
M
D
10
8

54LB 8 10 9 A

5 4 L B 8 10 9 A
Red Yellow Violet Black Orange Brown Gray Green

Fig. 5-
5 -8 Wiring between RELAY PWB and slip-
slip-ring

5 - 13
6. Brush and slip-
lip-ring cleaning

6-1. Clean all the tips of each brush by using soft kind toothbrush or a cotton bud.

Note:
・Do not use any cleaning solution.
・The toothbrush must be the type with the soft hair materials.
・The spring pressure may change when you add too much power to each brush. Please hold the
arm while you gently clean each tip of the brushes.
・Please make sure that there are no remaining hair or debris of cotton bud.

Fig. 5-
5 -9 Brush cleaning

5 - 14
6-2. Clean entire rings of the Slip-ring, and all layers with cotton tape or a cotton bud.

Note:
・Do not use any cleaning solution.
・Clean the edges of the Slip-ring. Refer to “A”
A”
・Please make sure that there are no remaining hair or debris of cotton bud.

Clean while pulling cotton tape

with both hands.

“A” Clean the edges, too.

Fig. 5-10 Slip-

ip-ring

5 - 15
6-3. Wet the cotton bud with “WD-40”

Note:
・Do not blow to the Slip-ring/brush directly if "WD-40" is a spray can type.
・Take a small amount of liquid from the “WD-40” spray can in the plastic cap.

Fig. 5-11(1) Wet cotton bud and slip-

slip-ring.
ring.

5 - 16
6-4. Coating all layers of the Slip-ring with the cotton bud after dipping in "WD-40" liquid.

Note:
・Please make sure that there are no remaining hair or debris of cotton bud.

Fig. 5-11(2) Wet cotton bud and slip-

slip-ring.
ring.

5 - 17
7. Brush installation

7-1. Put back the brushes which, to the place removed in ｢3-1/3-2｣.
Caution should be taken so that the brush heads (16) should not be damaged during installation.
7-2. The brush head should be firmly in contact with slip ring rotor.

Brush head (all 16 points)

7-3. Check the following connections.

A --------------- ①
D --------------- ②
Brush terminal M --------------- ③ MCC PWB J2
B --------- ------④
H --------------- ⑤
10 --------------- ⑨ MCC PWB J5
8 --------- ------ ⑩
G --------- ----- “G” MCC PWB “G”

MCC PWB “G”

Brush terminal
MCC PWB Ｊ2
① ③ ⑤
② ④

Fig. 5-12 Brush terminal

erminal connections
MCC PWB Ｊ5
① ③ ⑤ ⑦ ⑨
② ④ ⑥ ⑧ ⑩

5 - 18
8. Shock absorber installation
nstallation

8-1. 8-1. Put back the shock absorbers, fasten nuts at all 4 corners.

Nut (all 4 corners)

8-2. All the shock shock absorbers should move smoothly.

Check if properly assembled

Fig. 5-13 Shock absorbers

absorbers

5 - 19
[6] SENSITIVE ELEMENT EXCHANGE

GYROCOMPASS
TG-
TG-8000

6-1
1. Preparations

1-1.Required parts and tools

1-1-1. Sensitive Element (P/N: 10229409H ：exchange base) (1pc)

Remove rubber protective cap

Take out from the box with care

2. ﾊﾞﾗﾝｽｳｪｲﾄ(大~小適量)

Fig. 6-1(1) Required parts and tools

6-2
1-1-2. Weight 1-1-3. Screw guide pin type with 1stripe
Sufficient amount for various weight ･thin 3.2mm :110025950 (1pc)
･fat 3.4mm :110025960 (1pc)

1-1-4.Phillips screw driver (regular size) (1pc)

Fig. 6-1(2) Required parts and tools

6-3
2. Sensitive element removal
emoval

2-1. Rotate the Phantom ring until the connector comes to the front as shown in the picture.

Phantom ring

2-3. Remove 4 screws “A”～“D”. Loosen screw “E” to remove the connector.

B Connector
D

Fig. 6-2 Phantom ring and sensitive element

6-4
2-4. Grab the neck of sensitive element firmly as shown in the picture and take it out from the
Mounting ring.

Take out
Mounting
ring

Fig. 6-3 Mounting ring and sensitive element.

element.

6-5
3. Sensitive element installation
nstallation

3-1. Grab the neck of the new sensitive element and put it back to the horizontal ring.

Put a new element

Mounting
ring

Fig. 6-4 Mounting ring and sensitive element

element.
lement.

3-2. Put the screw guide pin (fat 3.4mm) in “F” position all the way until the pin handle touches the frame
of the sensitive element. Put the screw guide pin (thin 3.2mm) in “G” position all the way as well. Put
the screw “A” & “D”. Remove the guide pins “F”&“G”.

G
3.2mm
F
3.4mm

Fig. 6-
6 -5 Sensitive element and screw guide pins
pins

6-6
3-3. Put the screws “B”&”C” in the place where guide pins were inserted and removed.
Put the connector back showing #8 wire at the left end.

8 wire should be at the left

B end of the connector

3-4. Sensitive element and the connector should be firmly close in contact without any gap.

Firmly in contact.
No space, gap.

Fig. 6-
6 -6 Sensitive element and connector.

6-7
4. Sensitive element
lement adjustment

4-1. Input DAMPING GAIN and θOFFSET into an extended menu.

4-1-1. Press DISP+ SET on the operating panel, then turn on the POWER (Test mode b).
Wait until the bearing will rotate 360 degrees. Wait up to 4 minutes until the rotor in the sensitive
element stops spinning.
4-1-2. Press SET & ACK/ENT at the same time for more than 3 seconds.
This will enter into extended menu.
4-1-3. After displaying ｢A-1｣｢1.1.U｣, enter the value of DAMPING GAIN written on each box of sensitive
element using ▲ or ▼ followed by ACK/ENT.
4-1-4. Press DISP button 5 times.
4-1-5. After displaying ｢A-1｣｢1.6.t｣, enter the value ofθOFFSET written on each box of sensitive
element using ▲ or ▼ followed by ACK/ENT.
4-1-6. Press SET button once. Press SET & ACK/ENT at the same time for more than 3 seconds.
This will return to normal mode.

DAMPING GAIN

θOFFSET

Fig.
Fig. 6-
6 -7 Operating panel and sensitive
sensitive element box.

6-8
4-2. Adjust the horizontal ring level within ±5 minutes. (1 scale is 2 minutes)

4-2-1. Remove screw “H” or “I”

4-2-2. Adjust weight and put back screw “H” or “I”
4-2-3. It takes more than 5 minutes to stabilize the reading of level gauge.

Horizontal ring level

Weight

Weight I

Fig. 6-
6-8 Horizontal ring level and adjust
adjust weight.

6-9
 Rotor level Center

-14 minutes (Limit)

+14 minutes (Limit)

Center

Center

Horizontal ring level

+5 minutes (Limit) -5 minutes (Limit)

Fig. 6-
6-9 Rotor level and horizontal
horizontal ring level.

4-3. Turn on the POWER.

6 - 10
[7] HRZC PWB EXCHANGE

GYROCOMPASS
TG-
TG-8000

7-1
1. Preparations

1-1．Required parts and tools

1-1-1. HRZC PWB (10169503) (1pc)

1-1-2. Insulation separator (tube) (20565709) (1pc)

HRZC PWB

Insulation separator (tube)

1-1-3. Phillips screw driver (regular size) (1pc)

Fig. 7-1 Required parts and tools

7-2
2. HRZC PWB removal
emoval

2-1. Remove 2 screws “A”～“B” and remove 2 plates.

2-2. Remove 2 connectors “C”～”D”.
2-3. Remove 4 screws “E”～“H” and remove HRZC PWB (Old).

E G 2 plates

HRZC PWB A

C
Plate
D
B

F H

Picture when you removed

HRZC PWB.
Do not remove the round plate!
IF you remove this plate, the
system need the entire
calibration of electromagnetic
field.

Fig. 7-
7-2 HRZC PWB and round plate

7-3
3. HRZC PWB installation
nstallation

3-1. Insert isolation tube to HRZC PWB.

3-2. Install HRZC PWB (New) and 4 back screws “E”～“H” as shown in Fig 7-2.
3-3. Put back 2 connectors “C”～”D” as shown in Fig 7-2.
3-4. Put back 2 plates with 2 screws “A”～“B” as shown in Fig 7-2.

Isolation tube

Fig. 7-
7-3 HRZC PWB and Isolation tube

7-4
4. HRZC PWB adjustment
djustment

・VR1 (gain) and VR2 (span) on HRZC PWB to be center position.

HRZC PWB

VR 2 VR 1
(Span) (Gain)

Limit;
VR1 / VR2 Max. (CW) position

Keep to
to be
center position

Limit;
Min. (CCW) position

Fig. 7-
7-4 VR1 and VR2 on HRZC
HRZC PWB.

< Caution >

Do not turn the trimmer more than the limits (Max. (CW) or Min. (CCW)). Otherwise the trimmer
and HRZC PWB will be broken.

7-5
[8] PARTS DESIGN CHANGE HISTORY
AND THE POINT TO PAY SPECIAL ATTENTION.
TTENTION.

GYROCOMPASS
TG-
TG-8000

8 - 1
 Shipment day Contents for design change and special note. Necessary parts and setting, when part change happens.
May, 2003～ (TG-8000 Production start)

Nov., 2003～ EMCC PWB design change. If existing EMCC PWB parts No. 10189542□(□=0 or 1),
- Harness change required for Rev. 0 and Rev. 1. the following parts are needed;
- IF EMCC PWB Rev. is 2 or after, you do not need to replace 　・EMCC PWB parts No. 10189542 (×1)
the harness. 　・Harness　parts No. 10189135 (×1)
　(・Changing the wiring between the azimuth sensor and MTERM PWB.)
* Refer to Fig. 8-3.
* Refer to Fig. 8-5.

If existing EMCC PWB parts No. 10189542□(□=2 or After),

the following parts are needed;
　・EMCC PWB parts No. 10189542 (×1)
* Refer to Fig. 8-3.

Jul., 2006～ BRUSH assembly design change (Washer addition) ・Brush assembly parts No. 102393794 (×1) & 102393804 (×1)
* Refer to Fig. 8-2.
(Refer to technial information No. 10-074) * Refer to [4] BRUSH (EXCHANGE)
AND SLIP RING CLEANING

Aug., 2009～ INVERTER PWB design change (Overcurrent changing function deletion) ・INVERTER PWB parts No. 10169537 (×1) or 10169109 (×1)

8 - 2
(Refer to technial information No. 10-082) Note:
- 10169537, need following insulation separators (tube).
　20565708　Q’ty：3　　 20565709　Q’ty：8
- 10169109, includes following insulation separators (tube).
　20565708　Q’ty：3　　 20565709　Q’ty：8
* Refer to Fig. 8-2.
* Refer to Fig. 8-6.

Apr., 2010～ HDM-200 LCD design change (CCM1620CGLS1) If existing LCD type "WM-C1602M-1GLYF"(old),
the following parts are needed;
(Refer to technial information No. 10-083) 　 ・LCD parts No. CCM1620CGLS1 (1-00024094-0001) (×1)
　・PANEL PWB parts No. 10189533 (×1)
(・Changing the wiring between the harness(J1) and LCD.)
* Refer to Fig. 8-4.
* Refer to Fig. 8-7.

If existing LCD type "CCM1620CGLS1"(new),

the following parts are needed;
　・LCD parts No. CCM1620CGLS1 (1-00024094-0001) (×1)
* Refer to Fig. 8-4.
 BRUSH assembly

8 - 3
INVERTER PWB

Fig. 8-2 BRUSH assembly

Fig. 8-1 INVERTER PWB

 Harness　parts
EMCC PWB (J7)

Harness　parts
GTERM (J7)

8 - 4
EMCC PWB (EMCC PWB is
underneath MTERM PWB)

MTERM PWB GTERM PWB

Fig. 8-3 EMCC PWB and GTERM PWB

 LCD

8 - 5
Fig. 8-4 HDM-200 panel (LCD)
 Only existing EMCC PWB part number 10189542□ (□=0 or 1), make wiring changes.

Before After
Existing EMCC PWB part number Install EMCC PWB part number
10189542□ (□=0 or 1). 10189542□ (2 or after).

8 - 6
MTERM Azimuth MTERM Azimuth
PWB sensor PWB sensor
TB31 TB31

MC1 ----------------- 1 MC1 ----------------- 1

MC2 ----------------- 2 Changing the wiring between MC2 ----------------- 2
MC3 ----------------- 3 the azimuth sensor and MC3 ----------------- 6
MTERM PWB.
MC4 ----------------- 4 MC4 ----------------- 5
MC5 ----------------- 5 MC5 ----------------- 3
MC6 ----------------- 6 MC6 ----------------- 4

Fig. 8-5 Wiring between the azimuth sensor and MTERM PWB.
 Setting of JP1 througth JP8 on the INVERTER PWB

In case of INVERTER PWB part No. 10169537□

□. (□=07 or before)
JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8
Short Open Open Open Open Open Short Open

8 - 7
In case of INVERTER PWB part No. 10169537□
□. (□=08 or after)
JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8
Short Open Open Open (No) Open Short Short

Fig. 8-6 INVERTER PWB setting

 Only existing LCD type "WM-C1602M-1GLYF"(old), make wiring changes.

Before After
Existing LCD part number Install LCD part number
"WM-C1602M-1GLYF"(old) "CCM1620CGLS1"(new)

Harness(J1) LCD Changing the Harness(J1) LCD

wiring between
J1-15 (Green) --------- JP2-1 the harness(J1) J1-15 (Green) --------- J1-15
J1-16 (Blue) --------- JP2-4 and LCD. J1-16 (Blue) --------- J1-16

8 - 8
Harness(J1) Harness(J1)

LCD LCD

Fig. 8-7 Wiring between the harness(J1) and LCD

 MAINTENANCE MANUAL
GYROCOMPASS TG-
TG-8000
[Document No. SG12-
SG12-SE005
SE005]
Mar.
Mar. 21,
21, 2013
2013

2-16-
16-46, MINAMI-
MINAMI-KAMATA, OHTA-
OHTA-KU, TOKYO
144-
144-8551, JAPAN
Tel. (81) 3-
3-3732-
3732-6583 FAX. (81) 3-3732-
3732-5050

Notice: This maintenance manual must not be copied or reproduced without expressed
written permission of TOKYO KEIKI.