Electrical Adjustment - Sony SA-WSLF10 Service Manual

SA-WSLF10/SS-CTL10/TSL10/TSL11
DIAT SIGNAL RF LEVEL ADJUSTMENT
This adjustment is performed in order to adjust the transmission
distance of RF signal for DIAT communication.
Connection:
TX board
TP815
(RF AMP OUT)
Procedure:
1. Connect the oscilloscope to TP815 (RF AMP OUT) and GND
on the TX board.
2. Connect DIR-T1 to DIR-T1 jack (J908).
3. Adjust RV801 on the TX board so that the center of waveform
becomes trigger level 1.05 Vp-p.
(*Trigger position: –4 DIV)
4. Confirm trigger is locked.
5. Adjust RV801 on the TX board so that the center of waveform
becomes 2.2 to 2.4 Vp-p.
RF Signal Reference Waveform
Adjustment Location:
– TX BOARD (Component Side) –
IC804
8
SECTION 4

ELECTRICAL ADJUSTMENT

oscilloscope
VOLT/DIV : 500 mV
TIME/DIV : 500 ns
level : 2.2 to 2.4 Vp-p
RV801
DIAT Signal
RF Level Adjustment
IC805
TP815
(RF AMP OUT)