Read Sony MHC-RG90 Service Manual online
MHC-RG90�
Pin No.
Pin Name
I/O
Description
48
BU UP/DOWN-SW
I
Optical pick-up up/down detection signal input terminal
49
TBL-SENS
I
Disc tray status detection signal input
50
CD-MUTE
O
CD analog signal muting on/off control signal output “H”: muting on
51
A-TRG
O
Deck-A side trigger plunger drive signal output “H”: plunger on
52
B-TRG
O
Deck-B side trigger plunger drive signal output “H”: plunger on
53
AMS-IN
I
Whether a music is present or not from the automatic music sensor circuit
“L”: music is present, “H”: music is not present
“L”: music is present, “H”: music is not present
54
CAPM-H/L
O
High/normal speed selection signal output “L”: high speed, “H”: normal speed
55
CAPM-CNT1
O
Capstan motor drive signal output
56
A-PLAY
I
Deck-A play detection signal input terminal “H”: deck-A play
57
B-PLAY
I
Deck-B play detection signal input terminal “H”: deck-B play
58
TC-MUTE
O
Line muting on/off control signal output to the automatic music sensor circuit “H”: muting on
59
SW-ON-LED
O
LED drive signal output terminal “H”: LED on Not used
60
SW-MATRIX-
SURR-2-LED
O
LED drive signal output terminal “H”: LED on Not used
61
REC-MUTE
O
Recording muting on/off control signal output “L”: muting on
62
VCC
—
Power supply terminal (+3.3V)
63
SOFT-TEST
O
Output terminal for the software test
64
VSS
—
Ground terminal
65
BIAS
O
Recording bias on/off control signal output “H”: bias on
66
EQ-H/N
O
Normal/high speed selection signal output “L”: normal speed, “H”: high speed
67
PB-A/B
O
Deck-A/B selection signal output “L”: deck-B, “H”: deck-A
68
ALC
O
Automatic limiter control signal output “H”: limiter on
69
TC-RELAY
O
Recording/playback selection signal output “L”: playback, “H”: recording
70
A-HALF
I
Deck-A cassette detection signal input terminal “L”: no cassette, “H”: cassette in
71
SW-LINK-LED
O
LED drive signal output terminal “H”: LED on Not used
72
SW-MATRIX-
SURR-1-LED
O
LED drive signal output terminal “H”: LED on Not used
73
DISPLAY-KEY
I
DISPLAY key input terminal
74
POWER-KEY
I
I/1 key input terminal
75
STBY-LED
O
LED drive signal output of the I/1 indicator “H”: LED on
76
AUDIO-OUT
GAME/VCD
O
Video out game/video CD selection signal output terminal “L”: video CD, “H”: game
Not used
Not used
77
AUDIO-OUT
ON/OFF
O
Audio out on/off control signal output terminal “H”: audio out on Not used
78
HP MUTE
O
Headphone muting on/off control signal output “L”: muting on
79
HP-DETECT
I
Connection detection signal input of the headphone jack
“L”: no connected, “H”: headphone connected
“L”: no connected, “H”: headphone connected
80
LINE-MUTE
O
Line muting on/off control signal output “H”: muting on
81
GEQ DATA
O
Serial data output to the audio signal processor
82
GEQ CLK
O
Serial data transfer clock signal output to the audio signal processor
83
STK-MUTE
O
Power amplifier on/off control signal output “L”: standby mode, “H”: power amplifier on
84
STBY-RELAY
O
Main power on/off control signal output “H”: power on
85
NO-USE
—
Not used
86
LINK-RELAY
O
Relay drive signal output for the surround speaker protect “H”: relay on Not used
87
FRONT-RELAY
O
Relay drive signal output for the front speaker protect “H”: relay on
88
PROTECTOR
I
Protect on/off detection signal input from the speaker protect circuit “L”: protect on
51
Click on the first or last page to see other MHC-RG90 service manuals if exist.