5.4 Test points on each board
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3) INT board (03P9322)
Test point Check Item Ratings Remarks
TP1 A/C RAIN 3.5 to 5.5 Vdc
TP2 A/C SEA 0 to 4.5 Vdc
TP3 CNTR 1 Not used
TP4 GAIN 5.3 to 8.5 Vdc
TP5 GAIN CONT Same wave as STC
4) STC waveform
Condition; TX, STC voltage (J809#9) adjusted to 3.5 ± 0.1 V manually.
Test point; Between R46 and R47.
Ratings; V1=3.5 to 3.9 V, V2=1.5 to 1.9 V, V3=0.5 to 0.7 V, T1=50 to 90 us
Fig.5-6 STC waveform
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