Sony HCD-GRX80J / HCD-R880 / HCD-RXD8 / HCD-RXD8S / MHC-RXD8 / MHC-RXD8S Service Manual ▷ View online
HCD-GRX80/RXD8/RXD8S
– 65 –
– 66 –
7-21. SCHEMATIC DIAGRAM – SUB TRANS SECTION – (RXD8/RD8S ONLY)
• See page 68 for Printed Wiring Board.
(Page 64)
(Page 43)
HCD-GRX80/RXD8/RXD8S
– 67 –
– 68 –
7-22. PRINTED WIRING BOARD – TRANS SECTION –
• See page 18 for Circuit Boards Location.
7-23. PRINTED WIRING BOARD – SUB TRANS SECTION – (RXD8/RXD8S ONLY)
• See page 18 for Circuit Boards Location.
Ref. No.
Location
• Semiconductor
Location
D11
C-2
D12
C-2
D13
C-2
D14
C-2
D15
C-2
D16
E-3
D17
D-2
D18
D-2
D19
D-2
D20
D-2
D21
D-2
D22
D-1
D23
D-1
IC11
D-3
Q11
D-2
Q12
D-2
Q13
D-2
Q14
D-1
Q15
D-1
Q16
D-1
Q17
D-1
(Page 35)
(Page 67)
(Page 68)
(Page 35)
(Page 35)
– 69 –
• PANEL (3/3) section
IC604 NJU3716M
7-24. IC BLOCK DIAGRAMS
• PANEL (1/3) section
IC603 BA3830F
2
3
14
1
f04
13 f05
12 f06
11 REC
LEVEL
10 VCC
15 f03
5
REC
NF
6
REC
IN
7
RESET
C
8
BIAS
C
9
GND1
4
16 f02
17 f01
18 RESET
R02
P01
LINE
NF
LINE
IN
REFFERENCE
CURRENT
BPF
DET
BPF
DET
BPF
DET
BPF
DET
DET
RESET
Bias
REFFERENCE
CURRENT
DET
DET
BPF
BPF
• PANEL (2/3) section
IC605 MSM6654A-540GS-K
8
12
7
BEEP TONE
GENERATOR
MELODY
GENERATOR
OSC
(XT/CR)
RANDOM
CIRCUIT
I/O
INTERFACE
TIMING CONTROLLER
17 STAGE (MSM6654A)
ADDRESS COUNTTER
17 STAGE (MSM6654A)
MULTIPLEXER
ADDRESS
&
SWITCHING
CONTROLLER
1M BIT ROM
EDITING ROM &
ADDRESS ROM
CONTAINS 22KBIT
DATA
CONTROLLER
ADPCM
SYNTHESIZER
PCM
SYNTHESIZER
12 BIT
DAC
LPF
20
BUSY
8
RND
16
9
10
11
15
12
13
14
A2
A1
A1
A0
SW3
SW2
SW1
SW0
SW0
TEST
3
5
2
OSC1
OSC2
OSC3
1
17
22
23
24
RESET
XT/CR
AOUT
GND
VDD
13
DATA
CLK
STB
CLR
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P15
SO
P16
10
12
11
P13
P14
14
15
16
17
19
20
21
22
23
1
2
3
4
5
7
8
9
CONTROL
LATCH
SHIFT REGISTER
– 70 –
7-25. IC PIN FUNCTIONS
• IC501 MASTER CONTROL (M306622 MA-A01FP)
Pin No.
Pin Name
I/O
Function
1
STK-MUTE
O
Power amp ON/OFF signal output
2
POWER
O
Power ON/OFF signal output
3
F-RELAY
O
Front speaker relay control output
4
REAR-RELAY
O
Rear speaker relay control output (Not used)
5
CD-POWER
O
CD power on signal output
6
LINE-MUTE
O
Line mute ON/OFF selection output
7
DBFB-H/L
O
DBFB H/L select signal output
8, 9
–
–
Not used
10
XC-IN
I
11
XC-OUT
O
12
RESET
I
Reset signal input
13
X-OUT
O
X’tal (16MHz)
14
VSS
–
Ground
15
X-IN
I
X’tal (16MHz)
16
VCC
–
Power supply (+5V)
17
NMI
I
Not used (PULL UP EVER+5V)
18
WAKE UP
I
WAKE UP (Fixed at fixed at “L”)
19
SCOR
I
Subcode data request signal output
20
RDS-INT
I
21
RDS-DATA
I
22
AC-CUT
I
Back up signal input
23
PL-CLK
O
Clock signal to pro-logic (Not used)
24
PL-DATA
O
Data signal to pro-logic (Not used)
25
PL-LAT
O
Latch signal to pro-logic (Not used)
26
TIMER LED
I
Timer LED ON/OF
27
PROTECTOR
I
Speaker protect ON/OF
28
–
–
Not used
29
IIC-CLK
O
Clock output for IC601
30
IIC-DATA
O
Data output for IC601
31
–
–
Not used
32
SQ-DATA
I
33
SQ-CLK
I
34
SW-MODE
O
Not used
35
CD-DATA
O
CD data output
36
RY-SW
I
Head phone swich detect
37
CD-CLK
O
CD clock output
38
493-LAT
O
Latch signal output for M62493FP (IC101)
ST-BY LED/
CLOCK-OUT
40
L+R/L-R
I
41
BY-PASS
I
42
FL-SW
I
FL switch ON/OFF
43
STBY RELAY
I
Stand by relay ON/OFF
44
BASS FREQ
O
FREQ high/low signal for SYNC bass
45, 46
–
–
Not used
47
493-DATA
O
Data output for M62493FP (IC101)
48
493-CLK
O
Clock output for M62493FP (IC101)
49
ST-MUTE
O
Tuned mute signal output
X’tal (32.768MHz)
RDS data interrupt input
Subcode Q data clock input
39
O
Clock ond stand by LED signal output
Not used
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