Electrical Adjustments - Sony STR-DA5400ES Service Manual

BIAS ALIGNMENT ADJUSTMENT
Note: Afer 10 minutes or more have passed since the power supply was
turned on, this adjustment is done.
Connection:
CN1561 (CN1611, CN1761, CN1861) pin
CN1561 (CN1611, CN1761, CN1861) pin
Note: Pin 3, 4 of CN1611 are open.
Procedure:
1. Connect a digital voltmeter to the CN1561 (CN1611, CN1761,
CN1861).
2. Press the [POWER] button to turn on the main power.
3. Adjust the RV1501 (RV1551, RV1601, RV1701, RV1751,
RV1801, RV1851) so that the digital voltmeter reading is 5
mV to 20 mV.
Note: Adjust for the digital voltmeter reading to become 5 mV as much as
possible.
Adjustment and Connection Location:
– BIAS Board (Conductor Side) –
Adjustment hole Adjustment hole
for RV1801 for RV1851
(SBL) (SBR)
– PROTECTOR (SB) Board
(Component Side) –
CN1861
4 1
SECTION 5

ELECTRICAL ADJUSTMENTS

, CN1561 (CN1761, CN1861) pin
, CN1561 (CN1761, CN1861) pin
Adjustment hole Adjustment hole
for RV1601 for RV1501
(CENTER) (F-L)
– PROTECTOR (F-C) Board
(Component Side) –
CN1611
4 1
digital voltmeter
+
–
Adjustment hole Adjustment hole
for RV1551 for RV1701
(F-R) (SUR-L)
CN1561
4 1
STR-DA5400ES
Adjustment hole
for RV1751
(SUR-R)
– PROTECTOR (SURR) Board
(Component Side) –
CN1761
4 1
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