Sony SPP-Q123, Service Manual

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Channel Setting:
During startup in machine test mode, make the following channel
settings by loading the terminal input data.
Machine Test Mode Input / Output:
1. Input (Input ports for other than main tasks)
2. Output (Output ports for other than main tasks)
Pin Name Pin No. Function Logic
M1 (TP61) 23
M2 (TP62) 24
M3 (TP63) 25
M4 (TP64) 26
DIAL MODE (TP47) 17 Setting the TX ON/OFF H(T) : OFF, L(P) : ON
Manual : Channel increment Incrementing of channels in order from 1 to 25.
PAGE (TP46) 16
Machine : Dial data "5" is output to DTMF/DP exchange
Key input with "L" input.
The first time there is output of "5" with DTMF.
Setting the CH (channel) Refer to channel settig
29 Pin 28 Pin 27 Pin Operation with Operation with
TEST1 (TP65) TEST2 (TP66) TEST3 (TP67) CHARGE LED TX ON
L L L If RSSI(H) is detected : Light ON If RSSI(H) is detected : Light ON
L L H If RSSI(L) is detected : Light ON If RSSI(L) is detected : Light ON
L H L If TX LOCK is detected : Light OFF If TX LOCK is detected : Light OFF
L H H If RX LOCK is detected : Light OFF If RX LOCK is detected : Light OFF
H L L BEEP output
H L H ID CODE output
H H L If RING is detected : Light ON If RING is detected : Light ON
H H H If PAGE KEY is input : Light ON If PAGE KEY is input : Light ON
Pin Name Pin No. Function H Logic L Logic
CHARGE DET (TP21) 18 State in section 1. Input Refer to section 1. Input
Pin No. 23 24 25 26 TX frequency RX frequency
Channel M1(TP61) M2(TP62) M3(TP63) M4(TP64) (MHz) (MHz)
CH1 H L L L 43.720 48.760
CH2 L H L L 43.740 48.840
CH3
H H
L L 43.820 48.860
CH4 L L H L 43.840 48.920
CH5 43.920 49.020
CH6 43.960 49.080
CH7 44.120 49.100
CH8 44.160 49.160
CH9 44.180 49.200
CH10 44.200 49.240
CH11 44.320 49.280
CH12 44.360 49.360
CH13 44.400 49.400
CH14 H L H L 44.460 49.460
CH15 L H H L 44.480 49.500
CH16 H H H L 46.610 49.670
CH17 L L L H 46.630 49.845
CH18 46.670 49.860
CH19 46.710 49.770
CH20 46.730 49.875
CH21 46.770 49.830
CH22 46.830 49.890
CH23 H L L H 46.870 49.930
CH24 L H L H 46.930 49.990
CH25 H H L H 46.970 49.970
TEST1 L L H H 43.780 48.800
TEST2 H L H H 43.890 48.970
TEST3 L H H H 46.800 49.910
TEST4 H H H H 46.900 49.950