Sony HCD-GRX50 - MAIN BOARD IC501 Pin Function Details (Continued)

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Pin No. Pin Name I/O Function
39 STBY LED O
LED drive signal output of the I/u indicator (D754) “H”: LED on (standby mode)
40 VC L+R/L–R O
Virtual cinema L+R/L–R selection signal output terminal Not used (open)
41 VC BYPASS O
Virtual cinema bypass control signal output terminal Not used (open)
42 FL SW O
Filament on/off selection signal output for the fluorescent indicator tube (FL601)
“L”: on, “H”: off Used for the HCD-R770 and HCD-RXD7 models
43 STBY RELAY O
Main power on/off control signal output terminal “L”: standby mode, “H”: power on
Used for the HCD-R770 and HCD-RXD7 models
44 BASS FREQ. O
Sync bass frequency normal/high selection signal output to the M62493FP (IC101)
“L”: sync bass off (normal), “H”: sync bass high
45 FUNC SEL1 O
Not used (open)
46 FUNC SEL0 O
Not used (open)
47 493-DATA O
Serial data output to the M62493FP (IC101)
48 493-CLK O
Serial data transfer clock signal output to the M62493FP (IC101)
49 ST-MUTE O
Tuner muting control signal output to the FM/AM tuner unit “H”: muting on
50 STEREO I
FM stereo detection signal input from the FM/AM tuner unit “L”: stereo
51 TUNED I
Tuning detection signal input from the FM/AM tuner unit “L”: tuned
52 ST-CE O
PLL chip enable signal output to the FM/AM tuner unit
53 ST-DOUT O
PLL serial data output to the FM/AM tuner unit
54 ST-DIN I
PLL serial data input from the FM/AM tuner unit
55 ST-CLK O
PLL serial data transfer clock signal output to the FM/AM tuner unit
56
SENSE I Internal status detection monitor input from the CXD2587Q (IC101) on the CD block
57 HOLD
O Laser power control signal output to the CXA2568M (IC103) on the CD block
58 XLT
O Serial data latch pulse output to the CXD2587Q (IC101) on the CD block
59 XRST
O
Reset signal output to the CXD2587Q (IC101) and BA5974FP (IC102) on the CD block
“L”: reset
60 DISC-SENS I
Disc status detection signal input from the disc sensor (IC703)
61 TBL-SENS I
Disc tray status detection signal input from the disc tray sensor (IC702)
62 VCC —
Power supply terminal (+5V)
63 TBL-L O
Motor drive signal output to the disc tray turn motor driver (IC701) “L” active *1
64 VSS —
Ground terminal
65 TBL-R O
Motor drive signal output to the disc tray turn motor driver (IC701) “L” active *1
66 LOAD-OUT O
Motor drive signal output to the disc tray slide motor driver (IC801) “H” active *2
67 LOAD-IN O
Motor drive signal output to the disc tray slide motor driver (IC801) “H” active *2
68 to 70 ENC3 to ENC1 I
Detection signal input from the disc tray address detect rotary encoder (S811)
71 OUT-OPEN I
Detection signal input from the disc tray open/close detect switch (S801)
“L”: open, “H”: close
72 B-TRG O
Deck-B side trigger plunger drive signal output terminal “H”: plunger on
73 A-TRG O
Deck-A side trigger plunger drive signal output terminal “H”: plunger on
*1 Disc tray turn motor (M701) control *2 Disc tray slide motor (M801) control
Stop
Counter-
clockwise
Clockwise Brake Stop Table In Table Out Brake
TBL-L (pin ^£)
“H” “L” “H” “L”
LOAD-OUT (pin ^§)
“L” “L” “H” “H”
TBL-R (pin ^∞)
“H” “H” “L” “L”
LOAD-IN (pin ^¶)
“L” “H” “L” “H”
Terminal
Mode
Terminal
Mode