Sony DCR-TRV130, DCR-TRV130E Service manual

DCR-TRV130/TRV130E

SERVICE MANUAL

Level 2

Ver 1.2 2001. 11

Photo : DCR-TRV130E

RMT-814

US Model

Canadian Model

Korea Model

Brazilian Model

DCR-TRV130

AEP Model

UK Model

Australian Model

Chinese Model

DCR-TRV130E

E Model

Hong Kong Model

DCR-TRV130/TRV130E

M2000 MECHANISM

On the VC-256 board

This service manual provides the information that is premised the circuit board replacement service and not intended repair inside the VC-256 board. Therefore, schematic diagram, printed wiring board and electrical parts list of the VC-256 board are not shown. The following pages are not shown.

Printed wiring board......................... Pages 4-61 to 4-64

Schematic diagram .......................... Pages 4-31 to 4-60

Electrical parts list............................ Pages 6-15 to 6-22

SPECIFICATIONS

For MECHANISM ADJUSTMENT, refer to the “8mm Video MECHANICAL ADJUSTMENT MANUAL 861-11).

NTSC model : DCR-TRV130 PAL model : DCR-TRV130E

M2000 MECHANISM ” (9-929-

— Continued on next page —

DIGITAL VIDEO CAMERA RECORDER

• SUPPLIED ACCESSORIES

Make sure that the following accessories are supplied with your camcorder.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

SAFETY CHECK-OUT

After correcting the original service problem, perform the following safety checks before releasing the set to the customer.

Table for difference of function

Model Destination

Color system LINE REC

LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

DCR-TRV130

US,CND,E,HK, KR,JE,BR

NTSC

• Abbreviation CND : Canadian model HK : Hong Kong model AUS : Australian model JE : Tourist model

ATTENTION AU COMPOSANT AYANT RAPPORT

DCR-TR V130E

E,HK,AUS, JE,CN

PAL

À LA SÉCURITÉ!

AEP,UK

✕✕

Remark

DV signal only

CN : Chinese model KR : Korea model BR : Brazilian model

1. Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder splashes and bridges.

2. Check the interboard wiring to ensure that no wires are "pinched" or contact high-wattage resistors.

3. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair . Point them out to the customer and recommend their replacement.

4. Look for parts which, through functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.

5. Check the B+ voltage to see it is at the values specified.

6. Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270˚C during repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

— 2 —

TABLE OF CONTENTS

SERVICE NOTE

1. POWER SUPPLY DURING REPAIRS ····························· 6

2. TO TAKE OUT A CASSETTE WHEN NOT EJECT (FORCE EJECT) ································································ 6

SELF-DIAGNOSIS FUNCTION

1. Self-diagnosis Function ······················································ 7

2. Self-diagnosis Display························································ 7

3. Service Mode Display ························································7

3-1. Display Method ·································································· 7 3-2. Switching of Backup No. ··················································· 7 3-3. End of Display···································································· 7

4. Self-diagnosis Code Table ·················································· 8

1. GENERAL

Checking supplied accessories ··················································1-1 Quick Start Guide ······································································1-1 Getting started

Using this manual ··································································1-1 Step 1 Preparing the power supply ········································1-2 Installing the battery pack····················································1-2 Charging the battery pack ····················································1-2 Connecting to the mains ······················································1-3 Step 2 Setting the date and time ············································1-3 Step 3 Inserting a cassette······················································1-4

Recording –Basics

Recording a picture································································1-4 Shooting backlit subjects –BACK LIGHT ··························1-6 Shooting in the dark –NightShot/Super NightShot ·············1-6 Checking the recording –END SEARCH····························1-7

Playback –Basics

Playing back a tape ································································1-7 Viewing the recording on TV ················································1-9

Advanced Recording Operations

Recording a still image on a tape –Tape Photo recording ·····1-9 Using the wide mode ··························································· 1-10 Using the fader function ······················································1-10 Using special effects –Picture effect····································1-11 Using special effects –Digital effect····································1-12 Using the PROGRAM AE function ·····································1-12 Adjusting the exposure manually ········································1-13 Focusing manually·······························································1-13 Superimposing a title ···························································1-14 Making your own titles ························································1-14 Using the built-in light·························································1-15

Advanced Playback Operations

Playing back a tape with picture effects ······························1-16 Playing back a tape with digital effects ·······························1-16 Enlarging images recorded on tapes –Tape PB ZOOM ·······1-17 Quickly locating a scene using the zero set memory function·· Searching a recording by date –Date search························1-18 Searching for a photo –Photo search/Photo scan················· 1-18

Editing

Dubbing a tape ·····································································1-19

Customizing Y our Camcorder

Changing the menu settings·················································1-20

Troubleshooting

Tupes of trouble and their solutions ····································1-21 Self-diagnosis display ··························································1-22 Warning indicators and messages ········································1-23

Additional Information

About video cassettes ··························································1-23 About the “InfoLITHIUM” battery pack····························· 1-24 About i.LINK·······································································1-24 Using your camcorder abroad·············································· 1-25 Maintenance information and precautions···························1-25

1-17

Quick Reference

Identifying the parts and controls ········································1-27

2. DISASSEMBLY

2-1. VIDEO LIGHT································································2-2 2-2. LCD SECTION (PD-131 BOARD) ································2-3 2-3. FRONT PANEL SECTION (MI-041 BOARD) ··············2-4 2-4. CABINET (L) SECTION················································2-5 2-5. CABINET (R) SECTION, CONTROL SWITCH BLOCK

(CF-1000) ········································································2-6 2-6. EVF SECTION (VF-129 BOARD)·································2-7 2-7. BATTERY PANEL SECTION

(BATTERY TERMINAL BOARD) ································2-8 2-8. LENS SECTION ·····························································2-9 2-9. VC-256 BOARD ·····························································2-9 2-10. MECHANISM DECK···················································2-12 2-11. HINGE SECTION························································· 2-12 2-12. CIRCUIT BOARDS LOCATION ·································2-13 2-13. FLEXIBLE BOARDS LOCATION ······························2-14

3. BLOCK DIAGRAMS

3-1. OVERALL BLOCK DIAGRAM (1/5) ···························3-1 3-2. OVERALL BLOCK DIAGRAM (2/5) ···························3-3 3-3. OVERALL BLOCK DIAGRAM (3/5) ···························3-5 3-4. OVERALL BLOCK DIAGRAM (4/5) ···························3-7 3-5. OVERALL BLOCK DIAGRAM (5/5) ···························3-9 3-6. POWER BLOCK DIAGRAM (1/2)······························3-11 3-7. POWER BLOCK DIAGRAM (2/2)······························3-13

4. PRINTED WIRING BOARDS AND

SCHEMATIC DIAGRAMS

4-1. FRAME SCHEMATIC DIAGRAM (1/2) ·······················4-1

FRAME SCHEMATIC DIAGRAM (2/2)·······················4-3 4-2. PRINTED WIRING BOARDS AND

SCHEMATIC DIAGRAMS ············································4-5

• CD-281 (CCD IMAGER) PRINTED WIRING BOARD ·························4-7

• CD-281 (CCD IMAGER) SCHEMATIC DIAGRAM ······························4-8

• MI-041 (STEADY SHOT, MIC AMP, IR DRIVE) PRINTED WIRING BOARD ·························4-9

• MI-041 (STEADY SHOT, MIC AMP)(1/2) SCHEMATIC DIAGRAM ····························4-11

• MI-041 (IR DRIVE)(2/2) SCHEMATIC DIAGRAM ····························4-13

• PD-131 (RGB, TIMING GENERATOR, BACK LIGHT) PRINTED WIRING BOARD ·······················4-15

• PD-131 (RGB, TIMING GENERATOR)(1/2) SCHEMATIC DIAGRAM ····························4-19

• PD-131 (BACK LIGHT)(2/2) SCHEMATIC DIAGRAM ····························4-21

• VF-129 (B/W EVF) PRINTED WIRING BOARD ·······················4-23

• VF-129 (B/W EVF) SCHEMATIC DIAGRAM ····························4-25

• CONTROL SWITCH BLOCK (CF-1000) SCHEMATIC DIAGRAM ····························4-27

• LS-057 (S/T REEL SENSOR), FP-228 (DEW SENSOR),

FP-299 (MODE SWITCH), FP-300 (TAPE TOP), FP-302 (TAPE END), FP-301 (TAPE LED)

FLEXIBLE BOARDS AND SCHEMATIC DIAGRAMS··························4-29

• FP-258 (VIDEO LIGHT, S VIDEO) FLEXIBLE BOARD AND SCHEMATIC DIAGRAM

— 3 —

Shematic diagram and printed wiring board of the VC-256 board are not shown. Pages from 4-31 to 4-64 are not shown.

4-3. WAVEFORMS ······························································4-65 4-4. MOUNTED PARTS LOCATION ·································4-69

5. ADJUSTMENTS

1. Before starting adjustment···············································5-2 1-1. Adjusting items when replacing main parts and boards··5-2 5-1. CAMERA SECTION ADJUSTMENT···························5-4 1-1. PREPARATIONS BEFORE ADJUSTMENT

(CAMERA SECTION) ···················································5-4 1-1-1.List of Service Tools ························································5-4 1-1-2.Preparations ·····································································5-5 1-1-3.Precaution ········································································5-7

1. Setting the Switch···························································· 5-7

2. Order of Adjustments ······················································5-7

3. Subjects ···········································································5-7 1-2. INITIALIZATION OF C, D, E, F, 7, 8 PAGE DATA ····· 5-8 1-2-1.INITIALIZATION OF C, D, 8 PAGE DATA ··················5-8

1. Initializing the C, D, 8 Page Data···································· 5-8

2. Modification of C, D, 8 Page Data ··································5-8

3. C Page Table ····································································5-8

4. D Page Table ····································································5-9

5. 8 Page Table···································································5-10 1-2-2.INITIALIZATION OF E, F, 7 PAGE DATA ·················5-11

1. Initializing the E, F, 7 Page Data ···································5-11

2. Modification of E, F, 7 Page Data ·································5-11

3. F Page Table ··································································5-11

4. E Page Table ··································································5-12

5. 7 Page Table···································································5-12 1-3. CAMERA SYSTEM ADJUSTMENTS························ 5-13

1. HALL Adjustment ·························································5-13

2. Flange Back Adjustment (Using Minipattern Box)·······5-14

3. Flange Back Adjustment

(Using Flange Back Adjustment Chart and Subject More

Than 500m Away) ·························································5-15 3-1. Flange Back Adjustment (1)··········································5-15 3-2. Flange Back Adjustment (2)··········································5-15

4. Flange Back Check························································5-16

5. Picture Frame Setting ····················································5-16

6. Color Reproduction Adjustment····································5-17

7. Auto White Balance & LV Standard Data Input ···········5-18

8. Auto White Balance Adjustment ···································5-19

9. White Balance Check ····················································5-20

10. Angular Velocity Sensor Sensitivity Adjustment ··········5-21 1-4. MONOCHROME ELECTRONIC VIEWFINEDER

SYSTEM ADJUSTMENTS ··········································5-22 1-4-1. Horizontal Slant Check ·················································5-22 1-4-2. Centering Adjustment ···················································5-22 1-4-3. Focus Adjustment ·························································5-22 1-4-4. Aberration Adjustment ··················································5-23 1-4-5. Horizontal Amplitude Adjustment (VF-129 board) ······5-23 1-4-6. Vertical Amplitude Adjustment (VF-129 board)···········5-24 1-4-7. Brightness Adjustment (VF-129 board)························5-24 1-4-8. Horizontal Amplitude, Vertical Amplitude,

Focus Check ··································································5-24 1-5. LCD SYSTEM ADJUSTMENT ···································5-25

1. LCD Initial Data Input (1)·············································5-25

2. LCD Initial Data Input (2)·············································5-26

3. VCO Adjustment (PD-131 board)································· 5-26

4. RGB AMP Adjustment (PD-131 board) ························5-27

5. Contrast Adjustment (PD-131 board)····························5-27

6. COM AMP Adjustment (PD-131 board) ·······················5-28

7. V-COM Adjustment (PD-131 board) ····························5-28

8. White Balance Adjustment (PD-131 board)··················5-29

5-2. MECHANISM SECTION ADJUSTMENT··················5-30 2-1. ADJUSTMENT REMOTE COMMANDER ················5-30 2-2. HOW TO ENTER RECORD MODE WITHOUT

CASSETTE ···································································5-30

2-3. HOW TO ENTER PLAYBACK MODE WITHOUT

CASSETTE ···································································5-30 2-4. TAPE PATH ADJUSTMENT········································5-31 2-4-1.Preparations for Adjustment··········································5-31 2-4-2.Tape Path adjustment·····················································5-32 2-4-3.No.7 Guide (TG7) Adjustment······································5-33 2-4-4.CUE, REV Waveforms Check ·······································5-33 2-5. CHECKS AFTER ADJUSTMENTS·····························5-33 2-5-1.Waveform Build-up Check ············································5-33 2-5-2.Tape Path Check ····························································5-33 5-3. VIDEO SECTION ADJUSTMENT······························5-34 3-1. PREPARATIONS BEFORE ADJUSTMENTS ············5-34 3-1-1.Equipment to Required··················································5-34 3-1-2.Precautions on Adjusting···············································5-35 3-1-3.Adjusting Connectors ····················································5-36 3-1-4.Connecting the Equipment ············································ 5-36 3-1-5.Alignment Tape ·····························································5-37 3-1-6.Output Level and Impedance·········································5-37 3-2. SYSTEM CONTROL SYSTEM ADJUSTMENT ········5-38

1. Initialization of C, D, E, F, 7, 8 Page Data ····················5-38

2. Serial No. Input ·····························································5-38 2-1. Company ID Input ·························································5-38 2-2. Serial No. Input ·····························································5-38 3-3. SERVO AND RF SYSTEM ADJUSTMENT ···············5-40

1. REEL FG Adjustment (VC-256 Board) ························5-40

2. CAP FG Duty Adjustment (VC-256 Board) ·················5-40

3. PLL fo & LPF fo Pre-Adjustment (VC-256 Board)······5-41

4. Switching Position Adjustment (VC-256 Board)··········5-41

5. AGC Center Level and APC & AEQ Adjustment ·········5-42 5-1. Preparations before adjustments···································· 5-42 5-2. AGC Center Level Adjustment (VC-256 Board) ··········5-42 5-3. APC & AEQ Adjustment (VC-256 Board) ···················5-42 5-4. Processing after Completing Adjustments ····················5-43

6. PLL fo & LPF fo Fine Adjustment (VC-256 Board) ····5-43 3-4. VIDEO SYSTEM ADJUSTMENTS····························· 5-44

27MHz Origin Oscillation Adjustment (VC-256 Board) ··

2. Chroma BPF fo Adjustment (VC-256 Board)···············5-44

3. S VIDEO OUT Y Level Adjustment (VC-256 Board) ··5-45

4. S VIDEO OUT Chroma Level Adjustment

(VC-256 Board)·····························································5-45

VIDEO OUT Y, Chroma Le vel Check (VC-256 Board) ·· 3-5.

IR TRANSMITTER ADJUSTMENTS (DCR-TR V130)··

IR Video Carrier Frequency Adjustment (MI-041 Board) ··

2. IR Video Deviation Adjustment (MI-041 Board)··········5-47

3. IR Audio Deviation Adjustment (MI-041 Board) ·········5-48 3-6. AUDIO SYSTEM ADJUSTMENTS ····························5-49

1. Playback Level Check ···················································5-49 5-4. SERVICE MODE··························································5-50 4-1. ADJUSTMENT REMOTE COMMANDER ················5-50

1. Using the Adjustment Remote Commander··················5-50

2. Precautions Upon Using the Adjustment Remote

Commander ···································································5-50 4-2. DATA PROCESS···························································5-51 4-3. SERVICE MODE··························································5-52

1. Setting the Test Mode ····················································5-52

2. Emergence Memory Address ········································5-52 2-1. C Page Emergence Memory Address ····························5-52 2-2. EMG Code (Emergency Code) ·····································5-53 2-3. MSW Code ····································································5-54

3. Bit Value Discrimination ··············································· 5-55

4. Switch check (1) ····························································5-55

5. Switch check (2) ····························································5-55

6. Switch check (3) ····························································5-55

5-44

5-46 5-47 5-47

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7. Switch check (4) ····························································5-56

8. Record of Use check······················································5-56

9. Record of Self-diagnosis check ·····································5-57

6. REPAIR PARTS LIST

6-1. EXPLODED VIEWS ······················································6-1 6-1-1.OVERALL SECTION·····················································6-1 6-1-2.CABINET (L) SECTION················································6-2 6-1-3.EVF SECTION································································6-3 6-1-4.LENS SECTION ····························································· 6-4 6-1-5.CABINET (R) SECTION ···············································6-5 6-1-6.LCD SECTION ·······························································6-6 6-1-7.CASSETTE COMP ARTMENT ASSY, DRUM ASSY ···6-7 6-1-8.LS CHASSIS BLOCK ASSEMBLY······························· 6-8 6-1-9.MECHANICAL CHASSIS BLOCK ASSEMBLY-1 ······6-9 6-1-10. MECHANICAL CHASSIS BLOCK ASSEMBLY-2 ···6-10 6-2. ELECTRICAL PARTS LIST ········································6-11

Parts list of the VC-256 board are not shown. Pages from 6-15 to 6-22 are not shown.

* Color reproduction frame is shown on page 179.

— 5 —

SERVICE NOTE

1. POWER SUPPLY DURING REPAIRS

In this unit, about 10 seconds after power is supplied (8.4V) to the battery terminal using the service power code (J-6082-223-A), the power is shut off so that the unit cannot operate. These following two methods are available to prevent this. Take note of which to use during repairs.

Method 1.

Use the DC IN terminal. (Use the AC power adaptor.)

Method 2.

Connect the adjustment remote commander RM-95 (J-6082-053-B) to the LANC jack, and set the HOLD switch to the “ADJ” side.

2. TO TAKE OUT A CASSETTE WHEN NOT EJECT (FORCE EJECT)

1 Refer to 2-3. to remove the front panel section. 2 Refer to 2-4. to remove the cabinet (L) section. 3 Refer to 2-5. to remove the cabinet (R) section. 4 Open the control switch block (FK-1000). 5 Disconnect CN4401 (2P) of VC-256 board. 6 Add +5V from the DC POWER SUPPLY and unload with a pressing the cassette compertment.

Pull the timing belt in the direction of arrow the cassette compartment (take care not to damage) to adjust the bending of a tape.

Timing belt

Adjust the bending of a tape

Loading motor

with a pincette while pressing

Pincette

Timing belt

Press the cassette compartment not to rise the cassette compartment

Let your hold the cassette

compartment and rise the cassette compartment to take out a cassette.

DC power supply

(+5V)

Disconnect CN4401 of VC-256 board

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SELF-DIAGNOSIS FUNCTION

1. Self-diagnosis Function

When problems occur while the unit is operating, the self-diagnosis function starts working, and displays on the viewfinder or LCD or Display window what to do. This function consists of two display; self-diagnosis display and service mode display. Details of the self-diagnosis functions are provided in the Instruction manual.

Viewfinder or LCD Display window

C : 3 1 : 1 1

Repaired by:

C : Corrected by customer H : Corrected by dealer E : Corrected by service

engineer

Blinks at 3.2Hz

Indicates the appropriate step to be taken. E.g.

31 ....Reload the tape.

32 ....Turn o n power again.

3 1

Block

1 1

C : 3 1 : 11

Detailed Code

Refer to page 8 and 9. Self-diagnosis Code Table.

2. Self-diagnosis Display

When problems occur while the unit is operating, the counter of the viewfinder or LCD or Display window shows a 4-digit display consisting of an alphabet and numbers, which blinks at 3.2 Hz. This 5-character display indicates the “repaired by:”, “block” in which the problem occurred, and “detailed code” of the problem.

Display window

3. Service Mode Display

The service mode display shows up to six self-diagnosis codes shown in the past.

3-1. Display Method

While pressing the “STOP” key, set the switch from OFF to “VCR or PLAYER”, and continue pressing the “STOP” key for 5 seconds continuously. The service mode will be displayed, and the counter will show the backup No. and the 5-character self-diagnosis codes.

Viewfinder or LCD

[3] C : 3 1 : 1 1

Lights up

[3]

Backup No.

Order of previous errors

C : 3 1 : 1 1

Self-diagnosis Codes

3-2. Switching of Backup No.

By rotating the control dial, past self-diagnosis codes will be shown in order. The backup No. in the [] indicates the order in which the problem occurred. (If the number of problems which occurred is less than 6, only the number of problems which occurred will be shown.) [1] : Occurred first time [4] : Occurred fourth time [2] : Occurred second time [5] : Occurred fifth time [3] : Occurred third time [6] : Occurred the last time

Display window

3 C : 3 1 : 11

Control dial

3-3. End of Display

Turning OFF the power supply will end the service mode display.

Note: The “self-diagnosis display” data will be backed up by the built-in rechargeable lithium battery (CF-1000 block BT101).

When the cabinet (R) assembly is disconnected, the “self-diagnosis displa y” data will be lost by initialization.

— 7 —

4. Self-diagnosis Code Table

Self-diagnosis Code

Function

Repaired by:

C C C

C C

C C C C C C C C C C

Block

04 21 22

31 31

31 31 31 31 31 31 31 31 31 31

Detailed

Code

00 00 00

11 20

21 22 23 30 31 40 41 42 43 44

Symptom/State

Non-standard battery is used. Condensation. Video head is dirty. LOAD direction. Loading does not

complete within specified time UNLOAD direction. Loading does not

complete within specified time T reel side tape slacking when unloading S reel

side tape slacking when unloading T reel fault. S reel fault. FG fault when starting capstan. FG fault during normal capstan operations. FG fault when starting drum. PG fault when starting drum. FG fault during normal drum operations. PG fault during normal drum operations. Phase fault during normal drum operations. LOAD direction loading motor time-

out. UNLOAD direction loading motor

time-out. T reel side tape slacking when

unloading. S reel side tape slacking when

unloading. T reel fault.

S reel fault.

FG fault when starting capstan. FG fault during normal capstan

operations. FG fault when starting drum.

PG fault when starting drum. FG fault during normal drum

operations. PG fault during normal drum

operations. Phase fault during normal drum

operations.

Correction

Use the InfoLITHIUM battery. Remove the cassette, and insert it again after one hour. Clean with the optional cleaning cassette.

Load the tape again, and perform operations from the beginning.

Load the tape again, and perform operations from the beginning. Load the tape again, and perform operations from the beginning. Load the tape again, and perform operations from the beginning. Load the tape again, and perform operations from the beginning. Load the tape again, and perform operations from the beginning. Load the tape again, and perform operations from the beginning. Load the tape again, and perform operations from the beginning. Load the tape again, and perform operations from the beginning. Load the tape again, and perform operations from the beginning. Load the tape again, and perform operations from the beginning. Remove the battery or power cable, connect, and perform

operations from the beginning. Remove the battery or power cable, connect, and perform

operations from the beginning.

— 8 —

Self-diagnosis Code

Function

Repaired by:

Block

Detailed

Code

Symptom/State

Difficult to adjust focus (Cannot initialize focus.)

Zoom operations fault (Cannot initialize zoom lens.)

Handshake correction function does not work well. (With pitch angular velocity sensor output stopped.)

Handshake correction function does not work well. (With yaw angular velocity sensor output stopped.)

Correction

Inspect the lens block focus reset sensor (Pin qs of CN1551 of VC-256 board) when focusing is performed when the control dial is rotated in the focus manual mode and the focus motor drive circuit (IC1551 of VC-256 board) when the focusing is not performed.

Inspect the lens block zoom reset sensor (Pin qf of CN1551 of VC-256 board) when zooming is performed when the zoom lens is operated and the zoom motor drive circuit (IC1551 of VC-256 board) when zooming is not performed.

Inspect pitch angular velocity sensor (SE751 of MI-041 board) peripheral circuits.

Inspect yaw angular velocity sensor (SE752 of MI-041 board) peripheral circuits.

— 9 —