DOWNLOAD Sony DCR-TRV25 / DCR-TRV27 Service Manual ↓ Size: 16.93 MB | Pages: 127 in PDF or view online for FREE

— 3 —

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.

Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)

Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than

ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

After correcting the original service problem, perform the following

safety checks before releasing the set to the customer.

1

Wireless Remote Commander (1)

2

AC-L10A/L10B/L10C AC power
adaptor (1), Power cord (1) 

3

Size AA (R6) battery for Remote
Commander (2)

4

Battery pack (1) (NP-FM50)

5

A/V connecting cable (1) 

6

Shoulder strap (1)

7

Lens cap (1) 

8

“Memory Stick” (1) 

9

USB cable (1) 

q;

CD-ROM (SPVD-008 USB Driver) (1)

8

qs

4

7

qa

5

6

9

q; 

1

2

3

qs

2-pin conversion adaptor  (1)
DCR-TRV27 : Tourist model only

qa

2-pin conversion adaptor  (1)
DCR-TRV25 : E, Hong Kong/
          TRV27 : E, Hong Kong model only

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

— 4 —

1-1.

SERVICE NOTE ····························································· 1-1

1.

POWER SUPPLY DURING REPAIRS ·························· 1-1

2.

TO TAKE OUT A CASSETTE WHEN NOT EJECT
(FORCE EJECT) ····························································· 1-1

1-2.

SELF-DIAGNOSIS FUNCTION ···································· 1-2

1.

SELF-DIAGNOSIS FUNCTION ···································· 1-2

2.

SELF-DIAGNOSIS DISPLAY ······································· 1-2

3.

SERVICE MODE DISPLAY ·········································· 1-2

3-1.

Display Method ······························································· 1-2

3-2.

Switching of Backup No. ················································ 1-2

3-3.

End of Display ································································· 1-2

4.

SELF-DIAGNOSIS CODE TABLE ································ 1-3

2-1.

LCD SECTION (PD-161 BOARD) ································ 2-3

2-2.

EVF SECTION (LB-077 BOARD) ································· 2-4

2-3.

FRONT PANEL SECTION ············································· 2-5

2-4.

MA-409, FB-219 BOARDS ············································ 2-6

2-5.

TOP CABINET ASSEMBLY ········································· 2-7

2-6.

CABINET (R) SECTION ··············································· 2-7

2-7.

BATTERY PANEL SECTION ········································ 2-8

2-8.

EVF SECTION ································································ 2-8

2-9.

LB-077 BOARD ······························································ 2-9

2-10. VA-117 BOARD (1) ······················································ 2-10
2-11. MAIN CHASSIS COMPLETE ASSEMBLY ··············· 2-11
2-12. VA-117 BOARD (2) ······················································ 2-12
2-13. VC-281 BOARD ··························································· 2-12
2-14. LENS SECTION ··························································· 2-13
2-15. MECHANISM DECK ··················································· 2-13
2-16. JK-217, JK-218 BOARDS ············································ 2-14
2-17. CD-366 BOARD, 750A (CZ) BLOCK ASSEMBLY

(LENS DEVICE) ··························································· 2-14

2-18. CK-108 BOARD ··························································· 2-17
2-19. HINGE ASSEMBLY ····················································· 2-18
2-20. CONTROL SWITCH BLOCK (PS-CX2670) ·············· 2-19
2-21. MEMORY STICK CONNECTOR ······························· 2-20
2-22. CIRCUIT BOARDS LOCATION ································· 2-21
2-23. FLEXIBLE BOARDS LOCATION ······························ 2-22

3-1.

OVERALL BLOCK DIAGRAM (1/4) ··························· 3-1

3-2.

OVERALL BLOCK DIAGRAM (2/4) ··························· 3-3

3-3.

OVERALL BLOCK DIAGRAM (3/4) ··························· 3-5

3-4.

OVERALL BLOCK DIAGRAM (4/4) ··························· 3-7

3-5.

POWER BLOCK DIAGRAM (1/3) ································ 3-9

3-6.

POWER BLOCK DIAGRAM (2/3) ······························ 3-11

3-7.

POWER BLOCK DIAGRAM (3/3) ······························ 3-13

4-1.

FRAME SCHEMATIC DIAGRAM (1/3) ······················· 4-1
FRAME SCHEMATIC DIAGRAM (2/3) ······················· 4-3
FRAME SCHEMATIC DIAGRAM (3/3) ······················· 4-5

4-2.

SCHEMATIC DIAGRAMS ············································ 4-9

• CD-366 (CCD IMAGER)

SCHEMATIC DIAGRAM ······························ 4-9

• LB-077 (EVF, EVF BACK LIGHT)

SCHEMATIC DIAGRAM ···························· 4-10

• MA-409 (MIC IN, HP JACK, REMOTE CONTROL

RECEIVER, SWITCH)

SCHEMATIC DIAGRAM ···························· 4-11

• FB-219 (MANUAL FOCUS SENSOR)

SCHEMATIC DIAGRAM ···························· 4-11

• JK-217 (STEADY SHOT, A/D IN/OUT)

SCHEMATIC DIAGRAM ···························· 4-13

• JK-218 (DIGITAK IN/OUT)

SCHEMATIC DIAGRAM ···························· 4-13

• CK-108 (SWITCH, CONNECTOR)

SCHEMATIC DIAGRAM ···························· 4-15

• CONTROL SWITCH BLOCK (PS-CX2670)

SCHEMATIC DIAGRAM ···························· 4-17

• PD-161 (1/2)(RGB DRIVE, TIMING GENERATOR)

SCHEMATIC DIAGRAM ···························· 4-19

• PD-161 (2/2)(LCD DRIVE, BACK LIGHT)

SCHEMATIC DIAGRAM ···························· 4-21

• VA-117 (1/6)(RGB DRIVE, TG)

SCHEMATIC DIAGRAM ···························· 4-23

• VA-117 (2/6)(AUIDIO)

SCHEMATIC DIAGRAM ···························· 4-25

• VA-117 (3/6)(MIC AMP)

SCHEMATIC DIAGRAM ···························· 4-27

• VA-117 (4/6)(DC-DC CONVERTER)

SCHEMATIC DIAGRAM ···························· 4-29

• VA-117 (5/6)(CARGE)

SCHEMATIC DIAGRAM ···························· 4-31

• VA-117 (6/6)(VIDEO I/O)

SCHEMATIC DIAGRAM ···························· 4-33

• FP-100 (MODE SWITCH), FP-228 (DEW SENSOR),

FP-102 (TAPE TOP/END SENSOR, S/T REEL)

FLEXIBLE  BOARDS ·································· 4-35

• VC-281 (1/16)(A/D CONVERTER, TIMING

GENERATOR)

SCHEMATIC DIAGRAM ···························· 4-37

• VC-281 (2/16)(IRIS/FOCUS/ZOOM DRIVE, EVR)

SCHEMATIC DIAGRAM ···························· 4-39

• VC-281 (3/16)(CAMERA PROCESS)

SCHEMATIC DIAGRAM ···························· 4-41

• VC-281 (4/16)(MPEG MOVIE/DIGITAL STILL PROCESS)

SCHEMATIC DIAGRAM ···························· 4-43

• VC-281 (5/16)(HI CONTROL, DIGITAL STILL

CONTROL)

SCHEMATIC DIAGRAM ···························· 4-45

• VC-281 (6/16)(FLASH MEMORY SDRAM)

SCHEMATIC DIAGRAM ···························· 4-47

• VC-281 (7/16)(DV SIGNAL PROCESS)

SCHEMATIC DIAGRAM ···························· 4-49

• VC-281 (8/16)(DV INTERFACE)

SCHEMATIC DIAGRAM ···························· 4-51

• VC-281 (9/16)(REC/PB AMP)

SCHEMATIC DIAGRAM ···························· 4-53

• VC-281 (10/16)(USB I/F)

SCHEMATIC DIAGRAM ···························· 4-55

• VC-281 (11/16)(VIDEO A/D CONVERTER)

SCHEMATIC DIAGRAM ···························· 4-57

• VC-281 (12/16)(AUDIO A/D, D/A, PITCH YAW

SENSOR AMP)

SCHEMATIC DIAGRAM ···························· 4-59

• VC-281 (13/16)(DRUM/CAPSTAN DRIVE)

SCHEMATIC DIAGRAM ···························· 4-61

• VC-281 (14/16)(CAMERA/MECHA CONTROL)

SCHEMATIC DIAGRAM ···························· 4-63

• VC-281 (15/16)(HI CONTROL)

SCHEMATIC DIAGRAM ···························· 4-65

• VC-281 (16/16)(CONNECTOR)

SCHEMATIC DIAGRAM ···························· 4-67

4-3.

PRINTED WIRING BOARDS ····································· 4-69

• CD-366 (CCD IMAGER)

PRINTED WIRING BOARD ······················· 4-69

• FP-443 FLEXIBLE BOARD ····································· 4-70
• JK-217 (STEADY SHOT, A/D IN/OUT)

PRINTED WIRING BOARD ······················· 4-71

• JK-218 (DIGITAK IN/OUT)

PRINTED WIRING BOARD ······················· 4-72

— 5 —

• MA-409 (MIC IN, HP JACK, REMOTE CONTROL

RECEIVER, SWITCH)

PRINTED WIRING BOARD ······················· 4-73

• FP-444 FLEXIBLE BOARD ····································· 4-74
• FB-219 (MANUAL FOCUS SENSOR)

PRINTED WIRING BOARD ······················· 4-75

• PD-161 (RGB DRIVE, TIMING GENERATOR

LCD DRIVE, BACK LIGHT)

PRINTED WIRING BOARD ······················· 4-76

• LB-077 (EVF, EVF BACK LIGHT)

PRINTED WIRING BOARD ······················· 4-77

• FP-100 (MODE SWITCH), FP-228 (DEW SENSOR),

FP-102 (TAPE TOP/END SENSOR, S/T REEL)

FLEXIBLE BOARD ····································· 4-77

• CK-108 (SWITCH, CONNECTOR)

PRINTED WIRING BOARD ······················· 4-79

• VA-117 (RGB DRIVE, TG, AUDIO, MIC AMP,

DC-DC CONVERTER, CHARGE, VIDEO I/O)

PRINTED WIRING BOARD ······················· 4-83

• VC-281 (A/D CONVERTER, TIMING GENERATOR,

IRIS/FOCUS/ZOOM DRIVE, EVR, CAMERA PRO-
CESS, MPEG MOVIE/DIGITAL STILL
PROCESS, HI CONTROL, DIGITAL STILL
CONTROL, FLASH MEMORY SDRAM, DV SIGNAL
PROCESS, DV INTERFACE, REC/PB AMP, USB I/F,
VIDEO A/D CONVERTER, AUDIO A/D,
D/A, PITCH/YAW SENSOR AMP,
DRUM/CAPSTAN DRIVE, CAMERA/MECHA
CONTROL, HI CONTROL, CONNECTOR)

PRINTED WIRING BOARD ······················· 4-87

4-4.

WAVEFORMS ······························································ 4-91

4-5.

MOUNTED PARTS LOCATION ································· 4-96

1.

Before starting adjustment ··············································· 5-1

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 8, A, B, C, D, E, F, 1B, 1E, 1F
PAGE DATA ···································································· 5-8

1-2-1. INITIALIZATION OF A, D PAGE DATA ······················ 5-9
1.

Initializing the A, D Page Data ········································ 5-9

2.

Modification of A, D Page Data ······································ 5-9

3.

A Page Table ···································································· 5-9

4.

D Page Table ·································································· 5-10

1-2-2. INITIALIZATION OF B, 1B PAGE DATA ·················· 5-11
1.

Initializing the B, 1B Page Data ···································· 5-11

2.

Modification of B, 1B Page Data ·································· 5-11

3.

B Page Table ·································································· 5-11

4.

1B Page Table ································································ 5-11

1-2-3. INITIALIZATION OF 8, C PAGE DATA ····················· 5-12
1.

Initializing the 8, C Page Data ······································· 5-12

2.

Modification of 8, C Page Data ····································· 5-12

3.

8 Page Table ··································································· 5-12

4.

C Page Table ·································································· 5-13

1-2-4. INITIALIZATION OF E, F, 1E, 1F PAGE DATA ········ 5-15
1.

Initializing the E, F, 1E, 1F Page Data ·························· 5-15

2.

Modification of E, F, 1E, 1F Page Data ························· 5-15

3.

E Page Table ·································································· 5-16

4.

F Page Table ·································································· 5-17

5.

1E Page Table ································································ 5-18

6.

1F Page Table ································································ 5-19

1-3.

CAMERA SYSTEM ADJUSTMENTS ························ 5-20

1.

66MHz Origin Oscillation Adjustment (VC-281 board) ·· 5-20

2.

HALL Adjustment ························································· 5-21

3.

MR Adjustment ····························································· 5-22

4.

Flange Back Adjustment (Using Minipattern Box) ······· 5-23

5.

Flange Back Adjustment ··············································· 5-24

5-1.

Flange Back Adjustment (1) ·········································· 5-24

5-2.

Flange Back Adjustment (2) ·········································· 5-24

6.

Flange Back Check ························································ 5-25

7.

MAX GAIN Adjustment ··············································· 5-25

8.

Picture Frame Setting ···················································· 5-26

9.

Color Reproduction Adjustment ···································· 5-27

10.

Auto White Balance & LV Standard Data Input ··········· 5-27

11.

Auto White Balance Adjustment ··································· 5-28

12.

White Balance Check ···················································· 5-29

13.

Mechanical Shutter Adjustment ···································· 5-30

14.

Black Defective CCD Adjustment ································· 5-30

15.

Steady Shot Check ························································· 5-31

1-4.

COLOR ELECTRONIC VIEWFINDER SYSTEM
ADJUSTMENT ····························································· 5-32

1.

VCO Adjustment (VA-117 board) ································· 5-32

2.

RGB AMP Adjustment (VA-117 board) ························ 5-33

3.

Contrast Adjustment (VA-117 board) ···························· 5-33

4.

White Balance Adjustment (VA-117 board) ·················· 5-34

1-5.

LCD SYSTEM ADJUSTMENT ··································· 5-35

1.

VCO Adjustment (PD-161 board) ································· 5-35

2.

RGB AMP Adjustment (PD-161 board) ························ 5-36

3.

Contrast Adjustment (PD-161 board) ···························· 5-36

4.

COM AMP Adjustment (PD-161 board) ······················· 5-37

5.

V COM Adjustment (PD-161 board) ···························· 5-37

6.

White Balance Adjustment (PD-161 board) ·················· 5-38

5-2.

MECHANISM SECTION ADJUSTMENT ·················· 5-39

2-1.

HOW TO ENTER RECORD MODE WITHOUT
CASSETTE ··································································· 5-39

2-2.

HOW TO ENTER PLAYBACK MODE WITHOUT
CASSETTE ··································································· 5-39

2-3.

TAPE PATH ADJUSTMENT ········································ 5-39

1.

Preparation for Adjustment ··········································· 5-39

2.

Processing after Completing Operations: ······················ 5-39

5-3.

VIDEO SECTION ADJUSTMENTS ··························· 5-40

3-1.

PREPARATIONS BEFORE ADJUSTMENTS ············ 5-40

3-1-1. Equipment Required ······················································ 5-40
3-1-2. Precautions on Adjusting ··············································· 5-41
3-1-3. Adjusting Connectors ···················································· 5-42
3-1-4. Connecting the Equipment ············································ 5-42
3-1-5. Alignment Tapes ···························································· 5-43
3-1-6. Input/Output Level and Impedance ······························· 5-43
3-2.

SYSTEM CONTROL SYSTEM ADJUSTMENT ········ 5-44

1.

Initialization of 8, A, B, C, D, E, F, 1B, 1E, 1F Page Data · 5-44

2.

Serial No. Input ····························································· 5-44

2-1.

Company ID Input ························································· 5-44

2-2.

Serial No. Input ····························································· 5-44

3-3.

SERVO AND RF SYSTEM ADJUSTMENT ··············· 5-46

1.

Cap FG Duty Adjustment (VC-281 Board) ··················· 5-46

2.

PLL f

0

 & LPF f

0

 Adjustment (VC-281 Board) ·············· 5-46

3.

Switching Position Adjustment (VC-281 Board) ·········· 5-47

4.

AGC Center Level and APC & AEQ Adjustment ········· 5-47

4-1.

Preparations before adjustments ···································· 5-47

4-2.

AGC Center Level Adjustment (VC-281 Board) ·········· 5-47

4-3.

APC & AEQ Adjustment (VC-281 Board) ··················· 5-48

4-4.

Processing after Completing Adjustments ···················· 5-48

5.

PLL f

0

 & LPF f

0

 Fine Adjustment (VC-281 Board) ······ 5-49

3-4.

VIDEO SYSTEM ADJUSTMENTS ····························· 5-50

1.

Chroma BPF f

0

 Adjustment (VA-117 Board) ················ 5-50

2.

S VIDEO OUT Y Level Adjustment (VC-281 Board) ·· 5-50

— 6 —

3.

S VIDEO OUT Chroma Level Adjustment
(VC-281 Board) ····························································· 5-51

4.

VIDEO OUT Y, Chroma Level Check (VC-281 Board) · 5-51

3-5.

AUDIO SYSTEM ADJUSTMENTS ···························· 5-52

1.

Playback Level Check ··················································· 5-53

2.

Overall Level Characteristics Check ····························· 5-53

3.

Overall Distortion Check ··············································· 5-53

4.

Overall Noise Level Check ············································ 5-53

5.

Overall Separation Check ·············································· 5-53

5-4.

SERVICE MODE ·························································· 5-54

4-1.

ADJUSTMENT REMOTE COMMANDER ················ 5-54

1.

Using the adjustment remote commander ····················· 5-54

2.

Precautions upon using the adjustment remote commander · 5-54

4-2.

DATA PROCESS ··························································· 5-55

4-3.

SERVICE MODE ·························································· 5-56

1.

Setting the Test Mode ···················································· 5-56

2.

Emergence Memory Address ········································ 5-56

2-1.

EMG Code (Emergency Code) ····································· 5-56

2-2.

MSW Code ···································································· 5-57

3.

Bit value discrimination ················································ 5-58

4.

Switch check (1) ···························································· 5-58

5.

Switch check (2) ···························································· 5-58

6.

Switch check (3) ···························································· 5-59

7.

Switch check (4) ···························································· 5-59

8.

Record of Use check (1) ················································ 5-60

9.

Record of Use check (2) ················································ 5-60

10.

Record of Self-diagnosis check ····································· 5-60

6-1.

EXPLODED VIEWS ······················································ 6-1

6-1-1. OVERALL ······································································ 6-1
6-1-2. FRONT PANEL SECTION ············································· 6-2
6-1-3. CABINET (R) SECTION ··············································· 6-3
6-1-4. LCD SECTION (2.5INCH) (TRV25) ····························· 6-4
6-1-5. LCD SECTION (3.5INCH) (TRV27) ····························· 6-5
6-1-6. EVF SECTION ································································ 6-6
6-1-7. MAIN CHASSIS COMPLETE SECTION ····················· 6-7
6-1-8. CABINET (L) SECTION ················································ 6-8
6-1-9. CASSETE COMPARTMENT ASSEMBLY,

DRUM BLOCK ASSEMBLY ········································· 6-9

6-1-10. LS CHASSIS BLOCK ASSEMBLY ·························· 6-10
6-1-11. MECHANISM CHASSIS BLOCK ASSEMBLY ······ 6-11
6-2.

ELECTRICAL PARTS LIST ········································ 6-12

*

Color reproduction frame is shown on page 233.