Sony PMC-DR45 Service Manual ▷ View online
PMC-DR45
– 43 –
– 44 –
6-12. SCHEMATIC DIAGRAM — TC SECTION — • Refer to page 67 for IC Block Diagram. Refer to page 33 for Note.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : REC (TAPE)
(
no mark : REC (TAPE)
(
) : PB (TAPE)
(Page 47)
Q301
C
(REC)
• Waveform
1
4Vp-p
19.5
µ
sec
5
µ
sec/div
0.1V/div
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
10
11
12
13
i
-1
-2
S695
(REV ERASE PROOF)
M691
CAPSTAN/REEL
MOTOR
R691
PH691
S691
(HEAD POSITION)
S692
(HALF DET)
CNP314
9
1
PM691
PLUNGER
SOLENOID
S694
(FWD ERASE PROOF)
S693
(CrO
2
)
1-673-338-
PMC-DR45
– 45 –
– 46 –
6-13. PRINTED WIRING BOARDS — MAIN SECTION — • Refer to page 34 for Note.
(Page 42)
(Page 38)
(Page 60)
(Page 51)
(Page 33)
(Page 61)
D311
H-8
D312
E-9
D313
F-8
D315
H-7
D316
G-8
D317
H-6
D318
H-5
D319
H-4
D321
F-10
D322
H-3
D323
H-7
D324
H-7
D325
I-3
D326
F-3
D327
E-3
IC302
F-5
IC303
D-7
IC304
H-4
IC305
H-3
Q101
C-3
Q102
C-3
Q103
C-5
Q104
C-7
Q105
C-8
Q106
D-2
Q201
C-2
Q202
C-3
Q203
C-6
Q204
C-6
Q205
C-8
Q206
D-2
Q312
G-3
Q313
H-3
Q314
F-7
Q315
E-7
Q316
E-2
Q317
D-3
Q318
E-7
Q319
D-3
Q320
F-3
Q321
F-8
Q322
F-9
Q323
E-9
Q324
G-7
Q325
E-8
Q326
F-8
Q327
G-6
Q328
H-6
Q329
H-5
Q330
G-6
Q331
G-5
Q332
D-2
Q333
D-2
Q335
H-7
Q336
G-3
• Semiconductor
Location
Ref. No.
Location
PMC-DR45
– 47 –
– 48 –
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
(
no mark : FM
(
) : PB (TAPE)
<
> : REC (TAPE)
[
] : CD PLAY
6-14. SCHEMATIC DIAGRAM — MAIN SECTION — • Refer to page 68 for IC Block Diagrams. Refer to page 33 for Note.
(Page
59)
(Page 44)
(Page 36)
(Page 40)
(Page 53)
(Page 63)
PMC-DR45
– 49 –
– 50 –
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
10
11
12
13
6-15. PRINTED WIRING BOARD — CONTROL SECTION — • Refer to page 34 for Note.
IC801
rd
(TEX)
• Waveforms
1
IC801
r;
(X’TAL)
2
3Vp-p
8MHz
2.6Vp-p
32.768kHz
50nsec/div
0.2V/div
10
µ
sec/div
0.1V/div
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