HTR-5890
33
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AMP ADJUSTMENT
Confirmation of Idling Current of Amp Unit
0.1mV ~ 10.0mV
(DC)
0.1mV ~ 10.0mV
(DC)
R319 (FRONT Lch)
R320 (FRONT Rch)
R325 (CENTER)
R291 (FRONT Lch)
R292
(FRONT Rch)
R295 (CENTER)
R296 (SURROUND Lch)
R297 (SURROUND Rch)
R293 (SURROUND BACK Lch)
R294 (SURROUND BACK Rch)
R326 (SURROUND Lch)
R327 (SURROUND Rch)
R321 (SURROUND BACK Lch)
R322 (SURROUND BACK Rch)
Cut off
• Right after power is turned on, confirm that the voltage
across the terminals of R319 (FRONT Lch), R320
(FRONT Rch), R325 (CENTER), R326 (SURROUND
Lch), R327 (SURROUND Rch), R321 (SURROUND
BACK Lch), R322 (SURROUND BACK Rch) are
between 0.1mV and 10.0mV.
• If it exceeds 10.0mV, open (cutoff) R291 (FRONT Lch),
R 2 9 2 ( F R O N T R c h ) , R 2 9 5 ( C E N T E R ) , R 2 9 6
(SURROUND Lch), R297 (SURROUND Rch), R293
(SURROUND BACK Lch), R294 (SURROUND BACK
Rch) and reconfirm the voltage.
Attention
If the idle current exceeds 10.0mV after an amplifier
repair, first check for a defective component before
cutting the bias resistor.
• Confirm that the voltage is 0.2 mV ~ 15.0 mV after 60
minutes.
R320
R322
R321
R319
R294
R293
R292
R291
R297
R325
R326
R295
R296
R327
MAIN (3) P. C. B.
POWER (3) P. C. B.
MAIN (2) P. C. B.
MAIN (4) P. C. B.