9
PMA-710AE
ADJUSTMENT
Idling Current
Required measurement equipment: DC Voltmeter
1. Setup
(1) Place the unit at an ordinary position avoiding direct air flow from an air-conditioner or fan. Do the adjustment at a tem-
perature between 15 °C (59 °F) and 30 °C (86 °F).
(2) Set control as follows.
• POWER switch → OFF (j).
• VOLUME control → fully counterclockwise ( c min.)
• SPEAKER terminals → open: do not connect the speakers, dummy load etc.
2. Adjustment
(1) Remove top cover. And then connect DC Voltmeter to the test points CN31 and CN32 of CUP12196B Main PCB.
(2) Connect power cord to AC wall outlet, and turn POWER switch "ON" ( h ).
(3) Right after power on, adjust VR31 and VR32 so that the DC voltmeter reads 10 ±1mV.
(4) Then after 2 minutes warm up adjust VR31 and VR32 so that the DC voltmeter reads 10 ±1mV.
(5) And after 10 minutes warm up adjust VR31 and VR32 so that the DC voltmeter reads 10 ±0.5mV.
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