User's Manual

PRELIMINARY
PRELIMINARY PRELIMINARY
PRELIMINARY –
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– Service Manual
Service ManualService Manual
Service Manual
DR• CHKD• APPD•
40
Pin No. Port
name
I/O Function
1 TI I Input QT/DQT signal
2 BUSY I Input busy signal
3 BATT I Detect battery voltage
4 NC I NC
5 TO O Output QT/DQT
6 BEEP O Beep output
7 NC I NC
8 ENC0 I Input encode
9 ENC1 I Input encode
10 ENC2 I Input encode
11 ENC3 I Input encode
12 NC I NC
13 PTT I [PTT] input •connect RXD
14 TXD O RS-232C output
15 RXD I RS-232C input
16 MONI I [MONI] input
17 SELF I program L•set up mode
18 CNVSS I Connect VSS
19 RST I Reset
20 INT0 I Power detection
21 NC I NC
22 XIN I Oscillator•7.3728MHz•
23 XOUT O
Oscillator
24 VSS I Grounding
25 SHIFT O Clock frequency deviation H•unlock
26 PABC O MOS FET power H•unlock
27 WNRC O Audio referential sensitivity L•narrow
28 WNTC O Max deviation H•narrow
29 NC I NC
30 SDA I/O EEPROM data cable
31 SCL O EEPROM clock cable
32 UL I Lock circuit detector L•unlock
33 DT O Common data output
34 CK O Common clock output
35 LE O PLL IC H•lock up
36 5MC O Power control except CPU and EEPROM
L•unlock
37 AFCO O AF amplifier H•unlock
38 RX O TX/RX VCO H•receive
39 GLED O Green light control H•light
40 RLED O Red light control H•light
41 SAVE O Power saving control H•power saving OFF
42 MUTE O Squelch control H•Mic squelch L•AF
squelch
43 5RC O Receiver power control L•unlock
44 5TC O Transmitter power control H•unlock