Pioneer A-209R Service Manual

Name: Pioneer A-209R
Brand: Pioneer
Rating: 4 (1 reviews)

34 pages

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A-209R, A-209

6. ADJUSTMENT

6.1 IDLE CURRENT ADJUSTMENT

¶ CAUTION : Heatsinks’ (Q323–Q326) DC level is equal to +B or -B.

Don’t touch them or you will be electric shocked.

1. Connect the measuring instrument as shown in Fig.6-1. (R373 or R374)

2. Turn the POWER switch to ON.

3. Adjust VR301 (VR302) so that the voltage between both sides of R373 (R374) becomes 10mV ± 1mV.

4. Ages for 5 minutes.

5. Adjust VR301 (VR302) so that the voltage between both sides of R373 (R374) becomes 11mV ± 1mV.

VR301 VR302

R375 R376

R373 R374

Heat Sink

CN202

AF ASSY

DC Voltmeter DC Voltmeter

SIDE A

Heat Sink

Fig.6-1 Adjustment Method

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