Sony HCD-VR50 User manual

– 1 –
HCD-VR50/VR70
E Model
SPECIFICATIONS
COMPACT DISC DECK RECEIVER
— Continued on next page —
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
Tape Transport MechanismType TCM-230AWR2/230PWR2
CD
SECTION
TAPE DECK
SECTION
MICROFILM
SERVICE MANUAL
HCD-VR50/VR70 is the tuner, deck, CD and
amplifier section in LBT-VR50/VR70. Photo: HCD-VR50

HCD-VR50-/VR70
– 37 – – 38 –
7-4. SCHEMATIC DIAGRAM – BD SECTION –
• See page 32 forWaveforms.
• See page 98 for IC Block Diagrams.
• See page 101 for IC Pin Functions.
(Page 45)

HCD-VR50/VR70
– 39 – – 40 –
7-5. SCHEMATIC DIAGRAM – DECK SECTION –
• See page 98 for IC Block Diagrams.
(Page 59)

HCD-VR50-/VR70
– 45 – – 46 –
7-8. SCHEMATIC DIAGRAM –VIDEO (1/3) SECTION –
• See page 34 forWaveforms.
• See page 103 for IC Pin Functions.
(Page 37)
(Page 58)
(Page 47) (Page 47) (Page 49)
(Page
49)

HCD-VR50/VR70
– 47 – – 48 –
7-9. SCHEMATIC DIAGRAM –VIDEO (2/3) SECTION –
• See page 34 forWaveforms.
• See page 43 for PrintedWiring Board.
(Page 45) (Page 45)
(Page
49)
(Page
49)
• See page 105 for IC Pin Functions.

HCD-VR50-/VR70
– 49 – – 50 –
7-10. SCHEMATIC DIAGRAM –VIDEO (3/3) SECTION –
• See page 34 forWaveforms.
• See page 43 for PrintedWiring Board.
(Page 46)
(Page 46)
(Page 48)
(Page 48)
(Page 53)

HCD-VR50-/VR70
– 53 – – 54 –
7-12. SCHEMATIC DIAGRAM – MAIN (1/5) SECTION –
• See page 99 for IC Block Diagrams.
(Page 50)
(Page 84)
(Page
62)
(Page
57)
(Page
60)
(Page
56)
(Page
61)

HCD-VR50/VR70
– 55 – – 56 –
7-13. SCHEMATIC DIAGRAM – MAIN (2/5) SECTION –
• See page 34 forWaveforms.
• See page 51 for PrintedWiring Board.
• See page 108 for IC Pin Functions.
(Page 61) (Page 54)
(Page 62)
(Page 72)
(Page 58)
(Page 57, 58)
(Page 59,
60)

HCD-VR50/VR70
– 57 – – 58 –
7-14. SCHEMATIC DIAGRAM – MAIN (3/5) SECTION –
• See page 51 for PrintedWiring Board.
(Page 59)
(Page 54)
(Page 55, 56) (Page 56)
(Page 45)
(Page 88)
(Page 61)

HCD-VR50/VR70
– 59 – – 60 –
7-15. SCHEMATIC DIAGRAM – MAIN (4/5) SECTION –
• See page 51 for PrintedWiring Board.
(Page 40)
(Page 70)
(Page 61)
(Page 57) (Page 55)
(Page 54)

HCD-VR50/VR70
– 61 – – 62 –
7-16. SCHEMATIC DIAGRAM – MAIN (5/5) SECTION –
• See page 51 for PrintedWiring Board.
(Page
58)
(Page
55)
(Page
59)
(Page
54)
(Page 65) (Page 65)
(Page 56)
(Page 54)
(Page 92)

HCD-VR50/VR70
– 65 – – 66 –
7-18. SCHEMATIC DIAGRAM – POWER (1/2) SECTION –
(Page 91)
(Page 62)
(Page 62)
(Page 95)
(Page 67) (Page 67) (Page 68)

HCD-VR50/VR70
– 67 – – 68 –
7-19. SCHEMATIC DIAGRAM – POWER (2/2) SECTION –
• See page 63 for PrintedWiring Board.
(Page 65) (Page 65) (Page 66)

HCD-VR50/VR70
– 69 – – 70 –
7-21. SCHEMATIC DIAGRAM – LEAF SW SECTION –
7-20. PRINTEDWIRING BOARD – LEAF SW SECTION –
• See page 18 for Circuit Boards Location.
(Page 59)
(Page 51)

HCD-VR50/VR70
– 71 – – 72 –
7-22. SCHEMATIC DIAGRAM – PANEL FL SECTION –
• See page 100 for IC Block Diagrams.
• See page 110 for IC Pin Functions.
(Page
80)
(Page 79)
(Page 79)
(Page 56)
(Page 75)

HCD-VR50/VR70
– 75 – – 76 –
7-24. SCHEMATIC DIAGRAM – PANEL VR SECTION –
• See page 99 for IC Block Diagrams.
(Page 72)

HCD-VR50/VR70
7-26. SCHEMATIC DIAGRAM –TC PANEL SECTION –
– 79 – – 80 –
(Page 72)
(Page 72)
(Page 84) (Page 83)
(Page 71)
S
()
()
()
()
()

HCD-VR50/VR70
– 83 – – 84 –
7-28. SCHEMATIC DIAGRAM – CD PANEL SECTION –
(Page 80)
(Page 53)
(Page 79, 80)
SR
K
()
()
()
0.01
0.01 0.01
S667
R737
1.2k
S668
R738
1.8k
S669
R739
2.7k
S670
R740
3.3k
S671
R741
4.7k
NEXTPREVRETURNSELECT
ACTIVE

HCD-VR50/VR70
– 87 – – 88 –
7-30. SCHEMATIC DIAGRAM – CD MOTOR SECTION –
(Page 58)

HCD-VR50/VR70
– 91 – – 92 –
7-32. SCHEMATIC DIAGRAM – JACK SECTION –
(Page 65)
(Page 62)