GV-D300 - Sony VCR Service Manual (repair manual). Page 3

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1.

Power Supply During Repairs ............................................ 5

2.

How to Take a Cassette Out When the Main Power Cannot
Be Turned ON (Forced Ejected) ......................................... 5

3.

Warning Indicators ............................................................. 5

1.

Self-Diagnosis Function ..................................................... 6

2.

Self-Diagnosis Display ....................................................... 6

3.

Service Mode Display ........................................................ 6

3-1.

Display Method .................................................................. 6

3-2.

Switching of Backup No. ................................................... 6

3-3.

End of Display .................................................................... 6

4.

Self-Diagnosis Code Table ................................................. 7

Before you begin

Using this manual .................................................................. 1-1

Basic operations

Installing the AC adaptor/charger .......................................... 1-1
Inserting a cassette ................................................................. 1-2
Playing back a tape ................................................................ 1-2

Advanced operations

Using alternative power sources ............................................ 1-3
Changing the mode setting .................................................... 1-4
Searching a scene ................................................................... 1-5
Displaying recording data - data code function ..................... 1-6
Watching on a TV screen ....................................................... 1-7
Editing onto another tape ....................................................... 1-7
Recording from a VCR or TV ............................................... 1-8
Audio dubbing ....................................................................... 1-9
Superimposing a title ............................................................. 1-9
Making a custom title .......................................................... 1-10
Labeling a cassette ............................................................... 1-11

Assemble editing

What is assemble editing ..................................................... 1-11
Connecting the recording VCR ............................................ 1-11
Setting the VCR to control the recording VCR ................... 1-12
Adjusting the timing to start recording ................................ 1-12
Selecting scenes ................................................................... 1-13
Previewing scenes ................................................................ 1-13
Executing the assemble editing ........................................... 1-14

Additional information

Usable cassettes and playback modes .................................. 1-14
Charging the vanadium-lithium battery in the VCR ............ 1-15
Resetting the date and time .................................................. 1-15
Notes on “InfoLITHIUM” battery pack .............................. 1-15
Maintenance information and precautions ........................... 1-16
Using your VCR abroad ...................................................... 1-17
Trouble check ...................................................................... 1-17
Self-diagnosis display .......................................................... 1-18
Identifying the parts ............................................................. 1-19
Warning indicators ............................................................... 1-20

2-1.

Cassette Lid Assembly .................................................... 2-1

2-2.

Cabinet (Bottom) Assembly,
FP-571 (Lithium Battery) ................................................ 2-2

2-3.

MD Block Assembly,
Battery Panel Assembly ................................................... 2-2

2-4.

CB-61, RJ-77 Boards ...................................................... 2-3

2-5.

Control Switch Block (FK-71) ........................................ 2-3

2-6.

MD Block ........................................................................ 2-4

2-7.

Cabinet (R) Assembly ..................................................... 2-4

This section is extracted from
instruction manual. (GV-D900)

2-8.

IR-29, IO-62 Boards ........................................................ 2-4

2-9.

EX-34 Board .................................................................... 2-5

2-10. Cabinet (Upper) Assembly .............................................. 2-5
2-11. LCD Display Module (GV-D900/D900E) ...................... 2-5
2-12. Circuit Boards Location .................................................. 2-6

3-1.

Overall Block Diagram (1) .............................................. 3-1

3-2.

Overall Block Diagram (2) .............................................. 3-4

3-3.

Power Block Diagram ..................................................... 3-7

4-1.

Frame Schematic Diagram .............................................. 4-1

4-2.

Printed Wiring Boards and
Schematic Diagrams ........................................................ 4-5

• CB-61 (Chroma Process, SYNC SEP, SIG Interface,

RGB Decoder, Audio, Mode Control, DC-DC Converter)

Printed Wiring Board ...................................... 4-7

• CB-61 (Signal Processor)(1/10)

Schematic Diagram ....................................... 4-14

• CB-61 (Video Input)(2/10)

Schematic Diagram ....................................... 4-17

• CB-61 (Chroma Process)(3/10)

Schematic Diagram ....................................... 4-21

• CB-61 (SYNC SEP, EVR, SIG Interface)(4/10)

Schematic Diagram ....................................... 4-23

• CB-61 (RGB Decoder)(5/10)

Schematic Diagram ....................................... 4-26

• CB-61 (Audio 1)(6/10) Schematic Diagram .............. 4-29
• CB-61 (Audio 2)(7/10) Schematic Diagram .............. 4-32
• CB-61 (IR Block)(8/10) Schematic Diagram ............. 4-35
• IR-29 (IR Transmitter)

Printed Wiring Board and
Schematic Diagram ....................................... 4-37

• CB-61 (Mode Control)(9/10)

Schematic Diagram ....................................... 4-40

• CB-61 (DC-DC Converter)(10/10)

Schematic Diagram ....................................... 4-43

• RJ-77 (REC/PB Process, RF Interface, Blocking,

Mecha Con/Servo, Audio Signal Process, Mode Control)

Printed Wiring Board .................................... 4-47

• RJ-77 (REC/PB Processor)(1/9)

Schematic Diagram ....................................... 4-51

• RJ-77 (RF Interface)(2/9)

Schematic Diagram ....................................... 4-56

• RJ-77 (DV Signal Process)(3/9)

Schematic Diagram ....................................... 4-59

• RJ-77 (Blocking, DRAM)(4/9)

Schematic Diagram ....................................... 4-63

• RJ-77 (ECC, TBC, CHCD)(5/9)

Schematic Diagram ....................................... 4-67

• FP-242, FP-584 (Tape Sensors)

Flexible Boards ............................................. 4-70

• RJ-77 (Audio Signal Process)(6/9)

Schematic Diagram ....................................... 4-72

• RJ-77 (Mecha Con/Servo)(7/9)

Schematic Diagram ....................................... 4-75

• Rj-77 (Audio Display)(8/9)

Schematic Diagram ....................................... 4-78

• Rj-77 (Mode Control)(9/9)

Schematic Diagram ....................................... 4-81

• IO-62 (AV In/Out)

Printed Wiring Board .................................... 4-83

• IO-62 (AV In/Out, Customer Control)

Schematic Diagram ....................................... 4-85