Sony MDS-JB730 Service Manual page 51

Pin No. Pin Name
49 MUTE
50 STB
51 CHACK IN
52 NC
53 PACK-OUT
54 LDIN
55 LDOUT
56 LD-LOW
57, 58 NC
59 REC-P
60 PB-P
61 REC/PB
62 +3.3V
63
NC
64 GND
65 SDA
66 MNT3 (SLOCK)
67 WR-PWR
68 PROTECT
69 REFLECT
70 LDON
71 SENS
72 MNT1 (SHOCK)
73 DIG-RST
74 MNT2 (XBUSY)
75 XLATCH
76 MOD
77 LIMIT-IN
*1 Loading motor (M103) control
Mode
LOADING
Terminal
LDIN (pin %¢)
LDOUT (pin %∞)
I/O
O
Audio line muting on/off control signal output terminal "L": line muting on
O
Strobe signal output to the power supply circuit "L": standby mode, "H": power on
Detection input from the disc chucking-in detect switch
I
Not used (fixed at "H")
O Not used (open)
Detection input from the loading-out detect switch (S602)
I
"L" at a load-out position, others: "H"
O
Motor control signal output to the loading motor driver (IC471) "L" active *1
O Motor control signal output to the loading motor driver (IC471) "L" active *1
Loading motor drive voltage control signal output for the loading motor driver (IC471)
O
"H" active
O Not used (open)
I
Detection input from the recording position detect switch (S601) "L" active
I Detection input from the playback position detect switch (S604) "L" active
I Not used (fixed at "L")
— Power supply terminal (+3.3V)
O Not used (open)
— Ground terminal
I/O
Two-way data bus with the EEPROM (IC171)
I
Spindle servo lock status monitor signal input from the CXD2656R (IC121)
Laser power select signal output to the CXD2656R (IC121) and HF module switch circuit
O
"L": playback mode, "H": recording mode
I
Rec-proof claw detect input from the protect detect switch (S102) "H": write protect
Detection input from the disc reflection rate detect switch (S102)
I
"L": high reflection rate disc, "H": low reflection rate disc
O Laser diode on/off control signal output to the automatic power control circuit "H": laser on
I Internal status (SENSE) input from the CXD2656R (IC121)
I
Track jump detection signal input from the CXD2656R (IC121)
O
Reset signal output to the CXD2656R (IC121) and BH6511FS (IC152) "L": reset
I Busy signal input from the CXD2656R (IC121)
O Serial data latch pulse signal output to the CXD2656R (IC121)
Laser modulation select signal output to the HF module switch circuit
Stop: "L", Playback power: "H",
Recording power:
O
Detection input from the sled limit-in detect switch (S101)
I
The optical pick-up is inner position when "L"
EJECT BRAKE
"L" "H" "L"
"H" "L" "L"
Description
0.5 sec
2 sec
RUN IDLE
"H"
"H"
– 63 –
"L": chucking