Sony PMC-107L / PMC-20L Service Manual ▷ View online
– 21 –
Pin No.
Pin Name
I/O
Pin Description
75
VREF
—
Reference voltage terminal (Not used in this set.)
76
SHIFT-CLK
O
Shift clock output
77
LD-NONC
O
CD lazer diode control output
78 – 80
SEG19 – 21
O
LCD drive segment output
– 22 –
5-2. CIRCUIT BOARDS LOCATION
MAIN board
CD board
CD MOTOR board
POWER board
H.P board
REC SW board
KEY board
CONTROL board
PMC-107L
– 23 –
– 24 –
5-3. BLOCK DIAGRAM — CD SECTION —
M
33
31
25
6
42
44
13
14
16
37
Signal path
: CD
LD
34
PD
PD1
PD2
35
36
38
27
26
25
40
39
FO
FI
EI
E
VC
1
2
LD
DRIVE
Q701, 702
LASER
DIODE
CONTROL
22
24
19
20
21
23
55
56
57
59
54
50
40
22
20
34
14
21
48
6
14
2
5
8
3
18
19
1
FOK
FEO
TO
TI
TEO
SL+
SLO
F BIAS
RFO
XRST
SENS
CLK
XLT
DATA
COUT
XRST
RF
FOK
3
MDP
60
77
46
53
51
49
52
SPOA
SEIN
CLKO
XLTO
DATO
CNIN
FOCUS
PHASE
PHASE
TRACKING
PHASE
SLED
CONTROL
CD RF &
SYSTEM SERVO PROCESSOR
IC701
TRACKING
COIL
DRIVE
1
2
3
7
19
16
FOCUS
COIL
DRIVE
OUT4+
OUT1+
OUT1-
OUT4-
17
18
SLED
MOTOR
DRIVE
12
11
SPINDLE
MOTOR
DRIVE
OUT3+
OUT2+
OUT2-
OUT3-
TRACKING
COIL
FOCUS
COIL
A
C
B
D
E
F
F
LD
PD
OPTICAL PICK-UP
BLOCK
(KSS-213C)
IN4
IN1/R
MUTE
IN3/R
IN+
OPTICAL PICK-UP
DRIVE
IC703
M701
SLED
MOTOR
M
M702
SPINDLE
MOTOR
S701
(LIMIT)
SW701
(CD DOOR)
1
MAIN
SECTION
04
FOCUS
GAIN
RV704
TRAVERSE
RV702
FOCUS
BIAS
RV701
TRACKING
GAIN
RV703
FOCUS
ERROR
VC
48
VC
VC
SLED
RF
AMP
FOK
CD 5V
VC
VC
EFM
DEM.
SUBCODE
CLV
SERVO
ECC
SQSO
XLAT
SENS
DATA
CLOK
43
SCOR
47
SQCK
PCMD
MUTE
EMPH
BCK
LRCK
XTAI
D/A
CONV.
DATA
EMPH
BCK
LRCK
CKO
RO
12
22
LO
XO
XI
X701
16.9344MHz
D/A CONVERTER
IC704
R-CH
CD L-CH
RSTIN
1
MUTE
DIGITAL SIGNAL PROCESSOR
IC702
LD-NONC
44
56
C-SQCK
CD-DOOR
29
C-SCOR
46
C-SQSO
66
C-XLAT
45
C-SENS
64
C-DATA
65
C-CLK
59
C-MUTE
63
C-XRST
SYSTEM CONTROL/LCD DRIVE
IC801 (1/2)
R-ch : same as L-ch.
5-4. BLOCK DIAGRAM — MAIN SECTION —
– 25 –
– 26 –
M
5
4
21
6
24
55
62
70 69 68 57
4
11
5
6
7
72
74
76
32
58
61
67
23–20
15
52
17
13
12
20 19 18
49 48 50
47
53
21
20
31
24
2
5
12
23
22
PBIN1
REC1
P/R
VREF
VREF
RAIN1
TAPE
CDIN1
CD L-CH
ALC AMP
SW301-1
PB
REC
SW301-2
PB
REC
CONTROL
SEL
OUT1
PRE-AMP
IC301
R-CH
R-CH
L-CH
HRP301
RECORD/PLAYBACK
HEAD
1
CD SECTION
S302
(MD PLAY)
S301
(MD POWER)
T-PLAY
COM0
REC
COM3
19–1, 80–78
30•31
35–38
SEG0
SEG21
R-CE
R-CLK
R-DATA
R-COUNT
LCD801
SURROUND
TONE
VOL
CONTROL
PORT2
PORT1
CK
DATA
BC
LATCH
VOLUME/SOUND CONTROL
IC302
POWER AMP
IC303
Q304
SP301
SPEAKER
(L-CH)
R-CH
R-CH
J302
PHONES
V-CE
A-MUTE
60
PA-CON
V-DATA
V-CLK
TAPE
X802
32.768KHz
X801
4.19MHz
CLOCK
SHIFT
Q803
CLOCK
SHIFT
Q804
RESET
IC804
COM 5V
RST
R-ST
R-MUTE
KEY1
KEY4
WP
28
SIRCS
RECEIVER
IC803
RMC
51
REG-CON
42
REG-CHK
SHIFT-CLK
EXTAL
XTAL
TEX
TX
RADIO
54
CD
TUNER 5V
SWITCH
Q306
T901
POWER
TRANSFORMER
CE
CK
DA
CD
MW
10 LW
21
16 17
1
2
8
15
10
14
18
19
22
21
23
24
3
7
17
16
12
11
18
9
1
PD1
AM IN
FM IN
XOUT
XIN
IF IN
MO/ST
FM
X1
75KHz
9
14
AM
OSC
FM
OSC
AM
MIX
FM
MIX
AM RF
FM
RF
RF
IF
BUFFER
MO/ST
BAND
ST-IND
AM
DET
6
FM
DET
AF
BUFFER
H. FREQ.
CUT
Q7
H. FREQ.
IF CUT
Q9
FM
MPX
MUTE
R-CH
Q13
QUAD
VCO
13
IF CUT
R
L
CF4
CF3
CF2
CF1
CFT1
Q20
D3
D4
CT1
L5
L6
LW
SWITCH
Q6
LW
SWITCH
Q3
LPF
Q11
REG
Q12
MW/LW
SWITCH
Q2,4,5
L9, 10
(MW/LW ANT)
CT4
CT5
CT5
AMP
Q1
PON+B
FL1
04
D302
BPF
Q18
Q19
D5
L2
CT2
CT3
CT3
FM/MW/LW FRONT-END, IF DET,
FM STEREO DEMODULATOR
IC1
SYSTEM CONTROL/LCD DRIVE
IC801 (2/2)
PLL
IC2
Signal path
: FM
: MW
: PLAY
: REC
: CD
Q15
Q8
Q10
OSC
FM LEAD
ANTENNA
MW/LW
FM
CNP1
MW/LW LOOP
ANTENNA
Q805
D806, 807
SW801
|
SW819
TU 5V
CD 5V
SWITCH
Q307
5V REG
Q308
8V REG
Q309, 310
POWER ON
SWITCH
Q311, 312
CD 5V
+8V
VCC
+5V
LED/LAMP
DRIVE
Q806
D801
OPERATION
B+ SWITCH
Q801, 802
+5V REG
IC802
RECT
D901–904
D905
COM 5V
VDD 5V
D804
D805
D802
AC IN
MUTE
CONTROL
Q305, 317
POWER AMP
CONTROL
Q313, 314
STBY
OUT2
VC
IN2
+8V
M301
CAPSTAN /REEL
MOTOR
TU 5V
+5V
VREF
VREF
VREF
BIAS
OSC
Q303
Q301, 316
REC/PB
CONTROL
Q302, 315
REC
PB
T301
REC
BIAS
R-ch : same as L-ch.
PMC-107L
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