Sony DHC-MD777 / HMC-MD777 Service Manual ▷ View online
HMC-MD777
– 73 –
– 74 –
6-16. SCHEMATIC DIAGRAMS – MICROCOMPUTER Section –
•
See page 66 for Waveform.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
no mark : CD PLAY
∗
: Impossible to measure
(Page
53)
(Page
58)
(Page
58)
(Page 81)
(Page 81)
(Page 81)
(Page
86)
HMC-MD777
– 75 –
– 76 –
6-17. PRINTED WIRING BOARDS – RELAY Section –
•
See page 49 for Circuit Boards Location.
LINK
11
11
• Semiconductor
Location
Ref. No.
Location
IC401
B-5
IC402
B-5
IC451
B-4
Q400
B-6
Q401
B-5
Q403
B-6
Q404
B-5
RELAY BOARD
2
(Page 80)
(Page 64)
(Page 91)
(Page 64)
HMC-MD777
– 77 –
– 78 –
6-18. SCHEMATIC DIAGRAM – RELAY Section –
•
See page 103 for IC Block Diagram.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : CD PLAY
(
no mark : CD PLAY
(
) : MD PLAY
(Page 62)
(Page 93)
(Page 60)
(Page 81)
HMC-MD777
– 79 –
– 80 –
6-19. PRINTED WIRING BOARD – MAIN Section –
•
See page 49 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
D001
E-2
D002
F-2
D003
E-3
D004
F-4
D201
H-4
D202
H-4
D203
G-4
D204
G-4
D205
H-3
D206
H-3
D207
E-4
D208
E-3
D211
H-1
D212
H-1
D213
F-3
D214
H-3
D215
H-2
D216
G-2
D217
H-2
D218
H-4
D219
H-4
D220
H-3
D221
H-3
D224
E-4
D225
D-1
D226
F-1
D227
G-1
D308
F-4
D901
C-3
D902
C-3
D913
E-3
D951
B-3
D952
B-3
IC201
G-4
IC202
F-3
IC203
G-2
IC204
F-4
IC205
E-2
IC404
E-4
IC405
D-4
IC901
A-4
Q201
F-4
Q202
F-3
Q203
F-3
Q204
F-3
Q205
G-2
Q206
C-4
Q207
C-4
Q208
F-3
Q209
G-2
Q210
F-2
Q211
F-1
Q405
D-4
Q406
E-4
Q506
C-2
Q507
B-2
Q508
C-2
R
L
CD ANALOG OUT
R
L
R
L
MD ANALOG IN
MD ANALOG OUT
OPTICAL IN
DIGITAL IN
SYSTEM CONTROL
4
4
(Page 75)
(Page 72)
(Page 72)
(Page 72)
(Page 64)
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