SLV-7700KML - Sony VCR Service Manual (repair manual). Page 3

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 VHS
1.

Removal of Drum Assembly ·············································· 5

2.

Upper Drum Replacement ·················································· 5

2-1.

Removal of Upper Drum ···················································· 5

2-2.

Mounting Upper Drum ······················································· 5

3.

Periodic Check and Replacement ······································· 6

3-1.

Cleaning of Rotating Head Disk Assembly ························ 6

3-2.

Cleaning of the Tape Movement System ···························· 6

3-3.

Cleaning the Drive System ················································· 6

 VIDEO-CD
1.

Removing the Video-CD Mechanism Deck
(When not Energized) ························································ 7

2.

Removing the Disc (When not energized) ························· 7

Index to parts and controls ························································ 1-1
Getting Started

Step 1: Unpacking ································································· 1-2
Step 2: Setting up the remote commander ····························· 1-3
Step 3: Connecting the unit ··················································· 1-3
Step 4: Tuning your TV to this unit ······································· 1-3
Step 5: Presetting channels ···················································· 1-4
Step 6: Setting the clock ························································ 1-7

Basic Operations – VHS part

Playing a tape ········································································· 1-8
Recording TV programmes ··················································· 1-9
Recording TV programmes using the timer ························ 1-10

Basic Operations – VCD part

The VCD part of this unit can play the various discs ·········· 1-10
Playing a VIDEO CD/Audio CD ········································· 1-10
Using the display window ··················································· 1-11

Basic Operations – Karaoke function

Before you start karaoke ······················································ 1-12
Karaoke sing-along ······························································ 1-12
Displaying the karaoke information ···································· 1-13

Enjoying Playback and Recording a Tape

Playing/searching at various speeds ···································· 1-13
Checking/changing/cancelling timer settings ······················ 1-13
Editing with another VCR ··················································· 1-14
Searching with the index function ······································· 1-14
Adjusting the picture ··························································· 1-15
Changing menu options ······················································· 1-15
Audio dubbing ····································································· 1-15

Enjoying Playback of a VIDEO CD/Audio CD

Locating scenes directly using the scene numbers
(Scene Search) ····································································· 1-16
Resuming playback from the point you stopped a
VIDEO CD (Resume Play) ·················································· 1-16
Locating a particular point in a scene or track ····················· 1-17
Playing repeatedly ······························································· 1-17
Playing a random order (Shuffle Play) ································ 1-18
Creating your own programme (Programme Play) ············· 1-18
Playing a VIDEO CD with PBC functions (PBC Playback) ·· 1-19
Switching the sound ····························································· 1-19

Enjoying Karaoke Sing-along

Programming the order of the songs ···································· 1-20
Using the various functions ················································· 1-20
Recording your karaoke singing ·········································· 1-21

Additional Information

Precautions ··········································································· 1-21
Troubleshooting ··································································· 1-22

2-1.

Upper Case ······································································ 2-1

2-2.

Front Panel Assy ······························································ 2-1

2-3.

Jack Block, MJ-92 Board ················································ 2-1

2-4.

HI-66 Board ····································································· 2-2

2-5.

SW-323 Board, IO-65 Board ··········································· 2-2

2-6.

VCD Mechanical Block ·················································· 2-2

2-7.

CD-169 Board ································································· 2-2

2-8.

PS-418 Board ·································································· 2-3

2-9.

RP-233 Board ·································································· 2-3

2-10. MA-303 Board ································································ 2-3
2-11. Mechanism Deck ····························································· 2-4
2-12. TU-168 Board ·································································· 2-4
2-13. MB-77 Board ··································································· 2-4
2-14. Internal Views ·································································· 2-5
2-15. Circuit Boards Location ·················································· 2-6

3-1.

HI-66, IO-65, SW-323 and MJ-92 Boards ······················ 3-1

3-2.

MA-303, TU-168 and PS-418 Boards ····························· 3-1

3-3.

CD-169 and BD-21 Boards ············································· 3-2

3-4.

MB-77 Board ··································································· 3-2

4-1.

Overall Block Diagram (1/2) ··········································· 4-1

4-2.

Overall Block Diagram (2/2) ··········································· 4-3

4-3.

Video Block Diagram ······················································ 4-5

4-4.

Audio Block Diagram ····················································· 4-7

4-5.

Display Control Block Diagram ······································ 4-9

4-6.

Servo/System Control Block Diagram ·························· 4-11

4-7.

Karaoke, Audio I/O Block Diagram ······························ 4-13

4-8.

Video CD Block Diagram (1/2) ····································· 4-15

4-9.

Video CD Block Diagram (2/2) ····································· 4-19

4-10. Tuner Block Diagram ···················································· 4-21
4-11. Power Block Diagram ··················································· 4-23

5-1.  Frame Schematic Diagram ················································ 5-1
5-2.  Printed Wiring Boards and Schematic Diagrams ·············· 5-3

•  This Note is Common for Printed Wiring Boards and
    Schematic Diagrams ···················································· 5-3
•  CD-169 (Video-CD, Mecha Control)

Schematic Diagram (1/2) ································ 5-5

•  CD-169 (Video Encoder)

Schematic Diagram (2/2) ································ 5-7

•  CD-169 (VCD Mecha Control, MPEG)

Printed Wiring Board ······································ 5-9

•  BD-21 (RF AMP), Loading (Loading Motor)

Schematic Diagrams ····································· 5-11

•  BD-21 (RF AMP), Loading (Loading Motor)

Printed Wiring Boards ··································· 5-13

•  RP-233 (Head AMP)

Schematic Diagram ······································· 5-15

•  RP-233 (Head AMP)

Printed Wiring Board ···································· 5-17

•  MA-303 (Video/Audio Process, Servo/System Control)

Printed Wiring Board ···································· 5-19

•  MA-303 (Servo/System Control)

Schematic Diagram (1/5) ······························ 5-21

•  MA-303 (CTL, REC/PB Control)

Schematic Diagram (2/5) ······························ 5-23

•  MA-303 (Selector)

Schematic Diagram (3/5) ······························ 5-25

•  MA-303 (Audio Processor)

Schematic Diagram (4/5) ······························ 5-27

•  MA-303 (Y/C Video Process)

Schematic Diagram (5/5) ······························ 5-29

•  MB-77 (Karaoke DSP, Audio I/O)

Printed Wiring Board (Side A) ······················ 5-31