Sony MZ-R91 Service Manual page 34

• MAIN BOARD IC801 CXR701080-013GA (MASTER CONTROLLER)
Pin No.
Pin Name
1
SYNC REC
2
OFTRK
3 PROTECT
4
PAUSE KEY
5
TX
6 SENSE
7
WRPWR
8
XLAT
9 XCS DSP
10 CS RTC
11
SI0
12 SO0
13 SCK0
14 XGUM ON
15 VSS
16 VDD
17
XOUT
18
BEEP
19
RMC DTCK
20 XCS LCD
21
LCD STB
22
LCD RST
23 XHP STBY
24 CLV U
25
CLV V
26
CLV W
27 MODE1
28 MODE2
29
MODE3
30
HD CON 1
31
HD CON 2
32 XREC MODE
33 LD ON
34
TSB SLV ON
35
SLD MON 1
36 PD S0
37 REG CTL CLK
38
PD S1
I/O
I
SYNCHRO REC switch (S801) input terminal "L": off, "H": on
I
Off track signal input from the CXD2660GA (IC502)
Rec-proof claw detect input from the protect detect switch (S806)
I
"L": recording possible , "H": protect
I
Set pause key input terminal
Recording data output enable signal output to the CXD2660GA (IC502)
O
Writing data transmission timing output
I Internal status (SENSE) input from the CXD2660GA (IC502)
Laser power select signal output to the CXD2660GA (IC502)
O
"L": playback mode , "H": recording mode
O
Serial data latch pulse output to the CXD2660GA (IC502)
O Chip select signal output to the CXD2660GA (IC502)
O Chip select signal output to the real time clock (IC804)
Serial data input from the A/D, D/A converter (IC301), CXD2660GA (IC502), EEPROM
I
(IC802), real time clock (IC804) and switch & liquid crystal display module unit
Serial data output to the A/D, D/A converter (IC301), CXD2660GA (IC502), EEPROM (IC802),
O
real time clock (IC804) and switch & liquid crystal display module unit
Serial clock signal output to the A/D, D/A converter (IC301), CXD2660GA (IC502), EEPROM
O
(IC802), real time clock (IC804) and switch & liquid crystal display module unit
Rechargeable battery pack detection switch (S901) input terminal
I
"L": rechargeable battery pack in
—
Ground terminal
— Power supply terminal (+2.4V)
O
Not used (open)
O
Beep sound control signal input terminal
I/O
TSB serial communication data input/output terminal for remote commander with headphone
O Chip select signal output to the liquid crystal display
O
Strobe signal output to the liquid crystal display
O
Reset control signal output to the liquid crystal display
Standby on/off control signal output to the line/headphone amplifier (IC303)
O
"L": standby mode, "H": amplifier on
O
Spindle servo (U) drive signal output to the MPC17A56FTAF (IC601)
O
Spindle servo (V) drive signal output to the MPC17A56FTAF (IC601)
O
Spindle servo (W) drive signal output to the MPC17A56FTAF (IC601)
O Power supply control signal output for over write head drive to the MPC18A20MTAEL (IC603)
O Power supply control signal output for over write head drive to the MPC18A20MTAEL (IC603)
O
Power supply control signal output terminal for over write head drive
O
Over write head control signal output to the MPC17A17DTB (IC602)
O
Over write head control signal output to the MPC17A17DTB (IC602)
O Not used (open)
O Laser diode on/off control signal output terminal
I
TSB slave detect signal input terminal
I
Sled servo timing signal input from the MPC17A56FTA (IC601)
O PD IC mode switching signal output to the optical pick-up block
O Synchronizing external clock signal output terminal Not used (open)
O
PD IC mode switching signal output to the optical pick-up block
Description
"L": laser off, "H": laser on Not used (open)
– 50 –