Sony MDS-JA20ES Service Manual

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Pin No. Pin Name I/O Function
59 WR-PWR
O
Laser power select signal output to the CXD2654R (IC121) and HF module switch circuit
“H”: recording mode, “L”: playback mode
60 MNT3 (SLOCK) I
Spindle servo lock status monitor signal input from the CXD2654R (IC121)
61 SDA I/O
Two-way data bus with the EEPROM (IC171)
62 +3.3V
— Power supply terminal (+3.3V)
63
NC I Not used (fixed at “L”)
64 GND
— Ground terminal
65 SCTX O
Recording data output enable signal output to the CXD2654R (IC121) and overwrite head
driver (IC181) Writing data transmission timing output (Also serves as the magnetic head on/off
output)
66 SCL O
Clock signal output to the EEPROM (IC171)
67
MNT0 (FOK)
I
Focus OK signal input from the CXD2654R (IC121)
“H” is input when focus is on (“L”: NG)
68 LIMIT-IN
I
Detection input from the sled limit-in detect switch (S101)
The optical pick-up is inner position when “L”
Laser modulation select signal output to the HF module switch circuit
Playback power: “H”, Stop: “L”,
Recording power:
69 MOD
O
70 XLATCH
O Serial data latch pulse signal output to the CXD2654R (IC121)
71 REC/PB
I Not used (fixed at “L”)
72 TECONT
I Not used (fixed at “L”)
73 XTSL I
Not used (fixed at “L”)
74 OPEN I
Detection input from the tray open detect switch (S10) “L”: tray open
75 PLAY1 I
Detection input from the disc chucking-in detect switch (S11) “L” active
76 REC I
Detection input from the recording position detect switch (S12) “L” active
77 PLAY2 I
Detection input from the play position detect switch (S13) “L” active
78 LDIN O
Motor control signal output to the loading motor driver (IC400) “L” active *1
79 LDOUT
O Motor control signal output to the loading motor driver (IC400) “L” active *1
80 LD-LOW
O
Loading motor drive voltage control signal output for the loading motor driver (IC400)
“H” active
81
NC I Not used (fixed at “L”)
82
A1OUT O Sircs remote control signal output of the S-LINK CONTROL A1
83 MUTE O
Audio line muting on/off control signal output terminal “L”: line muting on
84 STB O
Strobe signal output to the power supply circuit “H”: power on, “L”: standby mode
2 sec
0.5 sec
*1 Loading motor (M10) control
Mode
Terminal
LDIN (pin &•)
“L” “H” “L” “H”
LDOUT (pin &ª)
“H” “L” “L” “H”
LOADING EJECT BRAKE RUN IDLE

Sony MDS-JA20ES Specifications

General

Brand	Sony
Model	MDS-JA20ES
Category	MiniDisc Player
Language	English