Service manual

66
PIN NO NO NAME DISCRIPTION 1/O ACTIVE
24 XIN X IN MAIN CLOCK (4.19MHz) I
25 XOUT X OUT MAIN CLOCK (4.19MHz) O
26 VSS GND MAIN CPU GND TERMINAL –
27 VCC VCC MAIN CPU POWER TERMINAL (+5 CONNECT) –
28 P63/OSC2/XCIN OSC2 SUB CLOCK (32.768KHz) I
29 P64/OSC2/XCOUT OSC1 SUB CLOCK (32.768KHz) O
30
RESET
RESET CPU RESET INPUT TERMINAL I LOW
31 P31 N. C. NOT USED –
32 P30
N. C. NOT USED –
33 P03 N. C. NOT USED –
34 P16 N. C. NOT USED –
35 P05 N. C. NOT USED –
36 P14/SDA2 N. C. NOT USED –
37 P13/SDA1 E
2
PROM DATA E
2
PROM DATA IN/OUT TERMINAL I/O
38 P1
2/SCL2 N. C. NOT CONNECTED I
39 P11/SCL1 E
2
PROM CLOCK E
2
PROM CLOCK OUTPUT TERMINAL O
40 P10/OUT2 N. C. NOT CONNECTED O
41 P23 VER SW 0
42 P22 TV/AV TV (L) AV(H) OUTPUT TERMINAL O
43 P21 V MUTE VIDEO MUTE(H) OUTPUT TERMINAL O HIGH
44 P20 A MUTE AUDIO MUTE(H) OUTPUT TERMINAL O HIGH
45 P07/PWM3 VOLUME VOLUME PWM OUTPUT TERMINAL O
46 P06/PWM2 SHARP SHARPNESS PWM OUTPUT TERMINAL O