Marantz PM-12 OSE, Service Manual

Page: 11 / 56

SCH03 AUDIO (VOLUME)
All Ref.No. has been described in the parts list are four digits.
But there are less than four digits of printed Ref.No. on the PCB, and they have become four digits after the header by adding "0" in the parts list.
GND LINE POWER- LINE POWER+ LINE Rch SIGNAL Lch SIGNAL STBY POWER
+3.3VD.
+15V.
-15V.
C5102
470/25
C5101
470/25
D-GND.
C5103
OPEN
C5104
OPEN
C5106
OPEN
C5113
100/25
L-IN
R-IN
C5114
100/25
D-GND.
OPEN
R51
04
OPEN
R5105
C5108
0.1
NJU72322V
U5101
D-GND.
D-GND.
10 R5101
10 R5102
V_LAT
V_CLK
10
R5103
V_DATA
C5111 1000P
A-GND.
C5110
OPEN
VO_L
VO_R
OPEN
R51
09
OPEN
R51
08
STYLE-PIN
50mm
Z5051
NA24W-K
S5053
D5052
1S
S355
+24V.
HP_REL_IN
S5053
L-GND.
Q5052
KRC105S
HP_L
2S
K209
Q5061
OPEN
J5061
2SC3324
Q5063
2SC3324
Q5065
R5069
10
+15V.
A-GND.
OPEN
J5062
2S
K209
Q5062
2S
C3324
Q5066
2S
C3324 Q5064
-15V.
R5070
10
HP_R
C5105
22/25
C5062
OPEN
C5061
OPEN
A-GND.
KSA992FTA
Q5101
KSC1845FTA
Q5102
C5109
0.01
9P-EH
N5051
TI_L
TI_R
TO_L
TO_R
HP_R
HP_L
A-GND.
47K
R51
10
47K
R51
11
C5122
47/25
C5121 47/25
C5107
220/16
1M
R5061
1M
R5062
0
R5063
0
R5064
47K
R5067
47K
R5068
150
R5065
150
R5066
C5063 220/25
C5064 220/25
1 NC
32 D_REF
31 NC
30 ADR0
29 D_CAP
28 D_V-
27 INL
26 AL_V-
25 AR_V-
24 AL_V+
23 AR_V+
22 INR
21 D_V+
20 LATCH
19 CLOCK
18 DATA
17 NC
2 L_CAP
3 OUTL
4 L-
5 L_REF
6 L+
7 L_REF
8 L_REF
9 R_REF
10
R_REF
11
R+
12
R_REF
13
R-
14
OUTR
15
R_CAP
16
D_IN
5
7
3
6
8
4
1
2
1
1
2
2
3
3
1
1
2
2
3
3
1 TI_L
2 TI_R
3 A_GND
4 TO_L
5 TO_R
6 NC
7 HP_L
8 HP_R
9 A_GND
8U-210238-1
AUDIO
(VOLUME)
To
TONE/HP PWB
N2503
R5110/R5111
12 : 6.8k
N : 47k
C5121/C5122
12 : 220/25(ROA)
N : 47/25(ROA)
1A
TO A1
2A
TO A2
3A
TO A3
5A
TO A5
6A
TO A6
A8
TO 8A
A9
TO 9A
B0
TO 0B
0B
TO B0
N5051
TO N2503
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
11