Sony PFM-32C1 Service Manual page 83

Q (1/3) BR24C21F (IC3001, IC3002)
1k BIT EEPROM ARRAY
8 BIT
7 BIT
NC 1
ADDRESS SUB WORD DATA
DECODER ADDRESS REGISTER REGISTER
NC 2
START STOP
CONTROL
NC 3
CIRCUIT
ACK
GND 4
HIGH-VOLTAGE POWER SUPPLY
GENERATING CIRCUIT VOLTAGE DETECTION
Q (1/3) M52758FP (IC3003, IC3004, IC3006)
36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Q (3/3) MAX202CSE (IC3018)
C1+ 1 16 Vcc
V+ 2 15 GND
C1- 3 14 T1OUT
4 13
C2+ R1IN
C2- R1OUT
5 12
V- 6 11 T1IN
T2OUT 7 10 T2IN
R2IN R2OUT
8 9
PFM-32C1/32C1E
A B
Q (2/3) NJM4558E (IC3009, IC3013)
A OUT 1 8 VCC
7 B OUT
A
– +
A IN– 2
B
+ –
8 VCC
A IN+ 3 6 B IN–
VEE 4 5 B IN+
7 VCLK
6 SCL
Q (1/3) SN74HC32APWR (IC3023)
5 SDA
VCC 4B 4A 4Y 3B 3A
14 13 12 11 10 9
1 2 3 4 5 6
1A 1B 1Y 2A 2B 2Y
Q (2/3) TA8776N (IC3012)
1Ø 2Ø 3Ø 4Ø
4 3 2 1
L IN 6
SW1
BUFFER
AND + _ PHASE SHIFT
L/R SWITCH
7
R IN
DOLBY IN 5 BUFFER
SDA 28
SCL 29 I2L AND D/A CONVERTER
30
GND
11 13 14 18 26
BASS L_R L+R TREBLE BALANCE
C
Q Q
3Y
8
7
GND
SURROUND L.P.F FILTER ADJ. TP L TP R MUTE
25 8 10 9 12
VOL
+
B/T
BAL
SW2 SW3 SW4
4Ø
1 1
2 2
L.P.F L_R
Ø 3 3
VOL
_ B/T
BAL
VOL
VOL
L+R
27 23 24 16 15 17
VOLUME DAC1 DAC2 VCC(9V) VCC(12V) GND
OUT OUT
7-11 7-11
D E
Q (1/3) TC74HC4052AF (EL) (IC3005)
0
Y0 1
2
Y1 2
Y 3
3
Y3 4
1
Y1 5
INH 6
SELECT A
VEE 7
SELECT B
VSS 8
Q (2/3) TDA7480 (IC3014, IC3015)
NC VCCPOW
7, 13 16
STBY/MUTE 12
IN 1 11
PRE
FEEDCAP 8
SGN-GND 10
1 - 3, 18 - 20
9
FREQ VCC
20 L OUT
Q (1/3) TK15452V (IC3010)
19 R OUT
VCC 1 14 + INPUT3
21 L_R OUT
22 L+R OUT
STANDBY 2 13 _ INPUT3
75 Z
GND 3 12 OUTPUT3
DRIVER
+ INPUT1 4 11 VCC
75 Z
_ INPUT1 5 DRIVER 10 OUTPUT2
75 Z
OUTPUT1 _ INPUT2
6 DRIVER 9
GND 7 8 + INPUT2
F G
16 VDD
2
15 X2
1
14 X1
X
13
0
12 X0
3
11 X3
10 A
9 B
VCCSIGN
14
6 BOOT
PWM 4 OUT
5 BOOTDIODE
15 VREG
17
VCC
H