Toshiba W-704C Service Manual page 103

7-5-1. IC501 Main Microcomputer Terminal Function
AUDIO MUTE CONTROL FOR HIFI SIGNAL
(HL TUNER, LL
CAPSTAN MOTOR Vcc CONTROL (Hi : 24V)
CAPSTAN MOTOR Vcc CONTROL (Hi : 14V)
CAPSTAN MOTOR DIRECTION CONTROL (L:FORWARD, H:REVERSE)
CTL OUT SCHMITT LEVEL TRIGGER SIGNAL OUTPUT
CASSETTE IN / REC INHIBIT SWITCH INPUT
TEST PIN 81 TEST3(ALE)
NO CONNECTION 82 NC
TV / VCR SWITCH 83 TV / VCR
NO CONNECTION 84 NC
CLOCK OUTPUT SIGNAL TO OSD IC 85 OSD SIO CLK
DATA OUTPUT SIGNAL TO OSD IC 86 OSD SIO DATA
CHIP SELECT SIGNAL TO OSD IC 87 OSD SIO STROBE
RESET SIGNAL FOR OSD IC 88 OSD RESET
89 AUDIO MUTE
NO CONNECTION 90 NC
VIDEO INPUT SELECTION 91 INPUT SEL 1
L1, LH L2) 92 INPUT SEL 2
93 CAP Vcc Hi
94 CAP Vcc MID
95 CAP F / R
96 CTL SCHMITT
CTL AMP GAIN SWITCH 97 CTL AMP GAIN
TAPE START SENSOR INPUT 98 START SENSOR
99 REC INH
NO CONNECTION 100 NC
C.SYNC 50 COMPOSITE SYNC INPUT(V SYNC DETECT)
C.FGA IN 49 CAPSTAN AMPLIFIED FG.A INPUT
C.FGB IN 48 CAPSTAN AMPLIFIED FG.B INPUT
POWER GOOD 47 POWER A.C CLOCK INPUT
REMOTE IN 46 REMOTE CONTROL SIGNAL INPUT
D.PG / FG 45 CYLINDER FG / PG INPUT
PB CTL IN 44 PB CTL INPUT
REC CTL OUT 43 REC CTL OUTPUT
RMT OUT 42 ROMOTE CONTROL SIGNAL OUTPUT FOR CABLE BOX CONTROL
HA SW 41 HEAD AMP OUTPUT SWITCH
COLOR ROTOR 40 COLOR ROTORY
SENSOR CTL 39 TAPE LED ON / OFF CONTROL SIGNAL
EE / PB / TRICK 38 VIDEO / AUDIO EE / PB / TRICK FUNCTION SIGNAL
V / A SW.P 37 VIDEO / AUDIO HEAD SWITCH CONTROL
REC(H) 36 VIDEO / AUDIO RECORD SIGNAL(H)
DPWM 35 CYLINDER MOTOR CONTROL OUTPUT
CPWM 34 CAPSTAN MOTOR CONTROL OUTPUT
NC 33 NO CONNECTION
PV / PH 32 PSEUDO V / PSEUDO H
D.VCC1 31 VOLTAGE INPUT
Fig. 7-5-2