Sony HCD-GR8 / HCD-RX90 / MHC-GR8 / MHC-RX90 Service Manual ▷ View online
– 88 –
1
TA-MUTE
O
Line mute signal output
2
DBFB-H/L
O
DBFB H/L select signal output
3
427-LAT
O
Latch signal output for IC201 (M62427FP)
4
K-CON-LAT
O
Not used
5
K-CON-ON
O
6
F-RELAY
O
Main speaker relay control output
7
R-RELAY
O
Surround speaker relay control output
8
PL-RELAY
O
Surround speaker relay control output
9
TEST
I
Connected ground
10
X2
O
X'tal (5MHz)
11
X1
I
12
VDD
–
Power supply (+5V)
13
XT2
O
X'tal (32.768 kHz)
14
XT1
I
15
RESET
I
Reset signal input
16
(INT/IN)
I
Connected ground
17
(INT/IN/OUT)
I
18
SCOR
O
Subcode data request signal output
19
SOFT-TEST
O
Software test port
20
AC-CUT
I
Reset signal input
21
RDS-INT
I
Serial data transfer clock signal input
(HCD-RX90: AEP, German, UK, Northern European models only)
(HCD-RX90: AEP, German, UK, Northern European models only)
22
RDS-DATA
I
Serial data input (HCD-RX90: AEP, German, UK, Northern European models only)
23
VDD
–
Power supply (+5V)
24
AVDD
I
Analog reference voltage input
25
ADJ
I
CD adjust point port
26
A-SHUT
I
A Deck reel pulse detector
27
B-SHUT
I
B Deck reel pulse detector
28
B-HALF
I
Half detector signal input
29
CLK-CHECK
I
Connected ground
30
SPEC-IN
I
Version select signal input
31
ADJ 2
I
Connected ground
32
DEMO-MODE
I
DEMO H/L select signal input
33
AVSS
–
Ground
34
SQ-DATA-IN
I
Subcode Q data clock input
35
—
–
Not used
36
SQ-CLK
I
Sub code Q data clock input
37
SW-ON/OFF
O
Not used
38, 39
FUNC 1, 2
I
Connected ground
40
VSS
–
Ground
41
VOL-LAT
O
Not used
42
PL-LAT
O
43
COM-DIN
I
Connected ground
Pin No.
Pin Name
I/O
Function
6-15. IC PIN FUNCTION DESCRIPTION
MAIN BOARD IC301 µPD780018YGF-011-3BA (MASTER CONTROL)
MAIN BOARD IC301 µPD780018YGF-011-3BA (MASTER CONTROL)
– 89 –
44
COM-DOUT
O
Common serial data output
45
COM-CLK
O
Common serial clock output
46
CD-POWER
O
CD power on signal output
47
CD-DATA
O
CD data output
48
CD-CLK
O
CD clock output
49
MSM-CND
O
DJ effect command output
50
MSM-BUSY
I
Busy signal input
51
MSM-LAT
O
Serial latch pulse output
52
MSM-NAR
I
NAR signal input
53
MSM-CH
O
CH select output
54
INPUT-CHANGE
O
GAIN control output
55
1IC-DATA
O
Data output for IC601
56
1IC-CLK
O
Clock output for IC601
57
XRST
O
CD reset signal output
58
XLT
O
CD latch signal output
59
FOUCUS-SW
O
Focus switching signal output
60
TBL-L
O
Table motor control output
61
TBL-R
O
62
TRAY-LED
O
CD tray LED ON/OFF output
63
LOAD-OUT
O
Loading motor control signal output
64
LOAD-IN
O
65
ST-CLK
O
Tuner clock output
66
ST-DIN
I
Tuner data input
67
ST-DOUT
O
Tuner data output
68
ST-CE
O
Tuner chip enable output
69
TUNED
I
Tuned detection for tuner
70
STEREO
I
Stereo detection for tuner
71
VSS
–
Ground
72
ST-MUTE
O
Tuner mute signal output
73
SENS2
I
BD Condition signal input
74
SENS
I
75
DISC-SENS
I
Not used
76
T-SENS
I
CD table detection signal input
77
UPSW
I
Up SW (S201) signal input (Not used)
78
ENC 3
I
79
ENC 2
I
Disctray address detect encoder input
80
ENC 1
I
81
OUT-OPEN
I
Out switch signal input
82
CAP-H/N
O
Capstan motor H/N speed select signal output
83
B-TRG
O
Trigger motor control output
84
A-TRG
O
Trigger motor control output
85
TRG-LOW
O
Trigger motor control output
86
CAP-M-ON/OFF
O
Capstan motor ON/OFF signal output
Pin No.
Pin Name
I/O
Function
– 90 –
87
PB-A/B
O
PB Deck A/Deck B select output
88
EQ-H/N
O
Equalizer H/N select output
89
BIAS
O
Bias ON/OFF signal output
90
REC-MUTE
O
REC mute ON/OFF selection output
91
NR-ON/OFF
O
NR ON/OFF signal output
92
R/P-PASS
O
REC/PB/PASS selection output
93
TC-MUTE
O
TC mute ON/OFF selection output
94
A-PLAY-SW
I
Deck A play detect
95
B-PLAY-SW
I
Deck B play detect
96
RELAY
O
REC/PB head selection output for IC602
97
A-HALF
I
Deck A cassette detect
98
POWER
O
POWER ON/OFF signal output
99
SW-F-CON
O
Super woofer mode signal output (Not used)
100
STK-MUTE
O
Power amp ON/OFF signal output
Pin No.
Pin Name
I/O
Function
– 91 –
1
SEG-35
O
Fluorescent display tube segment signal output
2
V-LOAD
–
–30V for Fluorescent display tube
3-10
LED1-LED8
O
LED driver output
11
VSS
–
Ground
12
X-OUT
O
X'tal (8MHz)
13
X-IN
I
X'tal (8MHz)
14
RESET
I
Reset signal input from master control
15, 16 LED9, LED10
O
LED driver output
17
TEST
I
Connected ground
18-23
LED11-LED16
O
LED driver output
24
VOL-A
I
Rotaly encoder pulse input
25
LED 17
O
Not used
26
JOG-A
I
Rotaly encoder pulse input
27
CLOCK
I
Serial clock input from master control
28
DATA
I
Serial data input from master control
29
LED SELECT
O
LED select signal output
30
VDD
–
Power supply (+5V)
31
VSS
–
Ground
32
MODEL
I
Connected ground
33-37
KEY1-KEY5
I
Key input
38
EWS STANDBY
–
Not used
39
SIRCS
I
Remote commander signal input
40
VOL-B
I
Rotaly encoder pulse input
41
JOG-B
I
Rotaly encoder pulse input
42-45
SPEANA 1-4
I
Spectrum analyzer signal input
46
L + R
I
Spectrum analyzer (high frequency) input
47
EWS SIGNAL
I
Not used
/LED 18
48
VASS
–
Ground
49
VAREF
I
Analog reference voltage input
50
VDD
–
Power supply (+5V)
51-66
GR1-GR16
O
Fluorescent display tube gride signal output
67-100 SEG1-SEG34
O
Fluorescent display tube segment signal output
Pin No.
Pin Name
I/O
Function
PANEL BOARD IC601 TMP87CH75F-6543 (GRAPHIC CONTROL)
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