Sony HCD-VR50, HCD-VR70 Service Manual
HCD-VR50/VR70
SERVICE MANUAL
HCD-VR50/VR70 is the tuner, deck, CD and
amplifier section in LBT-VR50/VR70.
Photo: HCD-VR50
CD
SECTION
TAPE DECK
SECTION
Model Name Using Similar Mechanism HCD-DR7AV/XB800AV
CD Mechanism Type CDM37L-5BD34L
Base Unit Type BU-5BD34L
Optical Pick-up Type KSS-213D/Q-NP
Model Name Using Similar Mechanism HCD-DR7AV/XB800AV
T ape Transport Mechanism Type TCM-230AWR2/230PWR2
E Model
SPECIFICATIONS
— Continued on next page —
MICROFILM
COMPACT DISC DECK RECEIVER
– 1 –
7-4. SCHEMATIC DIAGRAM – BD SECTION –
• See page 32 for Waveforms.
• See page 98 for IC Block Diagrams.
• See page 101 for IC Pin Functions.
HCD-VR50-/VR70
(Page 45)
– 37 –
– 38 –
HCD-VR50/VR70
7-5. SCHEMATIC DIAGRAM – DECK SECTION –
• See page 98 for IC Block Diagrams.
(Page 59)
– 39 –
– 40 –
7-8. SCHEMATIC DIAGRAM – VIDEO (1/3) SECTION –
• See page 34 for Wa veforms.
• See page 103 for IC Pin Functions.
HCD-VR50-/VR70
(Page
49)
(Page 37)
(Page 58)
(Page 47)
(Page 47)
(Page 49)
– 45 –
– 46 –
HCD-VR50/VR70
7-9. SCHEMATIC DIAGRAM – VIDEO (2/3) SECTION –
• See page 34 for Waveforms.
• See page 43 for Printed Wiring Board.
• See page 105 for IC Pin Functions.
(Page 45)
(Page 45)
(Page
49)
– 47 –
(Page
49)
– 48 –
7-10. SCHEMATIC DIAGRAM – VIDEO (3/3) SECTION –
• See page 34 for Waveforms.
• See page 43 for Printed Wiring Board.
(Page 46)
HCD-VR50-/VR70
(Page 46)
(Page 48)
(Page 53)
(Page 48)
– 49 –
– 50 –
7-12. SCHEMATIC DIAGRAM – MAIN (1/5) SECTION –
• See page 99 for IC Block Diagrams.
HCD-VR50-/VR70
(Page 50)
(Page 84)
(Page
62)
(Page
57)
(Page
60)
(Page
56)
– 53 –
(Page
61)
– 54 –
HCD-VR50/VR70
7-13. SCHEMATIC DIAGRAM – MAIN (2/5) SECTION –
• See page 34 for Wa veforms.
• See page 51 for Printed Wiring Board.
• See page 108 for IC Pin Functions.
(Page 61) (Page 54)
(Page 62)
(Page 59,
60)
(Page 72)
(Page 57, 58)
(Page 58)
– 55 – – 56 –
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