Sony MDS-S40 Service Manual page 35

Pin No. Pin Name I/O
Detection input from the disc chucking-in detect switch
51 CHACK IN I
Not used (fixed at "H")
52 NC O Not used (open)
Detection input from the loading-out detect switch (S602)
53 PACK-OUT I
"L" at a load-out position, others: "H"
54 LDIN O
Motor control signal output to the loading motor driver (IC441) "L" active *1
55 LDOUT O Motor control signal output to the loading motor driver (IC441) "L" active *1
Loading motor drive voltage control signal output for the loading motor driver (IC441)
56 LD-LOW O
"H" active
57, 58 NC O Not used (open)
59 REC-P I
Detection input from the recording position detect switch (S601) "L" active
60 PB-P I Detection input from the playback position detect switch (S604) "L" active
61 REC/PB O Not used (open)
62 +3.3V
— Power supply terminal (+3.3V)
63 NC O Not used (open)
64 GND — Ground terminal
65 SDA I/O
Two-way data bus with the EEPROM (IC171)
66 MNT3 (SLOCK) I Spindle servo lock status monitor signal input from the CXD2654R (IC121)
Laser power select signal output to the CXD2654R (IC121) and HF module switch circuit
67 WR-PWR O
"L": playback mode, "H": recording mode
68 PROTECT 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)
69 REFLECT I
"L": high reflection rate disc, "H": low reflection rate disc
70 LDON O Laser diode on/off control signal output to the automatic power control circuit "H": laser on
71 SENS I Internal status (SENSE) input from the CXD2654R (IC121)
72 MNT1 (SHOCK) I
Track jump detection signal input from the CXD2654R (IC121)
73 DIG-RST O Reset signal output to the CXD2654R (IC121) and BH6511FS (IC152) "L": reset
74 MNT2 (XBUSY) I
Busy signal input from the CXD2654R (IC121)
75 XLATCH
O Serial data latch pulse signal output to the CXD2654R (IC121)
Laser modulation select signal output to the HF module switch circuit
Playback power: "H", Stop: "L",
Recording power:
76 MOD
O
Detection input from the sled limit-in detect switch (S101)
77 LIMIT-IN I
The optical pick-up is inner position when "L"
Focus OK signal input from the CXD2654R (IC121)
78 MNT0 (FOK) I
"H" is input when focus is on ("L": NG)
79 SCL O
Clock signal output to the EEPROM (IC171)
*1 Loading motor (M103) control
Mode
LOADING EJECT
Terminal
LDIN (pin %¢)
"L" "H"
LDOUT (pin %∞)
"H" "L"
Description
"L": chucking
0.5 sec
2 sec
BRAKE RUN IDLE
"L" "H"
"L" "H"
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Pin No. Pin Name I/O
Recording data output enable signal output to the CXD2654R (IC121) and overwrite head
80 SCTX O
driver (IC181) Writing data transmission timing output (Also serves as the magnetic head on/off
output)
Destination setting terminal
81 CLOCK SET0
I
(US and Canadian models: fixed at "L", AEP, UK and E models: fixed at "H")
Destination setting terminal
82 CLOCK SET1 I
(US and Canadian models: fixed at "H", AEP, UK and E models: fixed at "L")
83 LED0 O LED drive signal output of the r indicator (D741) "L": LED on
LED drive signal output of the ( indicator (D742) "L": LED on
84 LED1 O
85 OPT SEL0
O Not used (open)
86 OPT SEL1 O Not used (open)
87 MODEL SEL0 I
Setting terminal for the model (fixed at "L" in this set)
88 MODEL SEL1 I Setting terminal for the model (Not used (open))
89 REC O Not used (open)
90 BEEP SW
I BEEP switch (S851) input terminal "L": beep off, "H": beep on
91 NC O Not used (open)
92 SOURCE I INPUT switch (S731) input terminal (A/D input) "L": digital input, "H": analog input
93
KEY3 I Key input terminal (A/D input) Not used (fixed at "H")
Key input terminal (A/D input) S721 to S726 (EJECT 6, PLAY MODE, REPEAT, SCROLL,
94
KEY2 I
LEVEL/DISPLAY/CHAR, I/u keys input)
Key input terminal (A/D input)
95 KEY1 I
S711 to S714 (MENU/NO, YES, PUSH ENTER, CLEAR keys input)
96 AVSS — Ground terminal
97 Key input terminal (A/D input) S701 to S706 (r , p, ), 0, P, ( keys input)
KEY0 I
98 VREF I Reference voltage (+3.3V) input terminal (for A/D converter)
99 +3.3V — Power supply terminal (+3.3V) (for analog system )
100 I
MONO/ST Recording mode switch input terminal "L": mono, "H": stereo Not used (open)
Description
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