Sony STR-DH540 (serv.man2) Service Manual ▷ View online
STR-DH540
5
Flow of Repair (when sound is not outputted) (4/5)
NG
OK
OK
OK
OK
OK
NG
OK
NG
NG
NG
NG
– Continued on page
6
–
Check that voltages of the connector pins on the Digital board are the following value. DIGITAL board: CN1500 pin 3, 4: +3.3 V CN1500 pin 5, 6: +6 V CN1500 pin 7, 8: +3.6 V CN1500 pin 9, 10: +2 V
Check that voltage of the following pin is 3.3 V, 1.3 V DIGITAL board: IC3506 pin 112, 173: 3.3 V pin 18, 111, 116: 1.3 V
Check that voltage of the following pin is 3.3 V. DIGITAL board: IC3000 pin 38: 3.3 V (INITX)
Check that the X3000 on the DIGITAL board is oscillated normally.
Check the following parts and the surrounding circuit, and exchange the defective parts. DIGITAL board: IC3000
Check the following parts and the surrounding circuit, and exchange the defective parts. DCDC board: IC1902, IC1903, IC1904, F940, F941
Check the following parts and the surrounding circuit, and exchange the defective parts. DIGITAL board: IC3506
Check the following parts and the surrounding circuit, and exchange the defective parts. DIGITAL board: IC3001, IC2100
Check the following parts and the surrounding circuit, and exchange the defective parts. DIGITAL board: X3000
Perform the “SOFTWARE VERSION DISPLAY MODE” (refer to
page 10
on the
original service manual), and check that the video micro-processor version is not “0.00”.
Check that the sound from the HDMI input is outputted.
STR-DH540
6
Flow of Repair (when sound is not outputted) (5/5)
NG
OK
NG
Explain the settings of this unit to the customer.
Check that the speaker pattern setting is normal.
Check the surrounding circuit of power transistor of the channel to which data is not outputted (example: Q600 on the MAIN board) and the surrounding circuit of power amplifier circuit, and exchange the defective parts.
Check that the sound is outputted from each speaker, when the sound field is “A.F.D. AUTO”
MEMO
STR-DH540
7
STR-DH540
REVISION HISTORY
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Ver.
Date
Description of Revision
1.0
2013.01
New
1.1
2013.04
Addition of Australian Model.
Addition of C136 on DISPLAY board.
Addition of note in SERVICING NOTES (page 4).
Addition of SERVICING NOTES (TROUBLESHOOTING) (SUPPLEMENT-1).
Change of DISPLAY board, POWER KEY board and HEADPHONE board (Suffi x 21).
Change illustration of Front Panel (page 63).
Change service code of IC1902, IC1903 and IC1904.
Change P/N of C902, C907, C908, C1910, C1911, C1912, C1935, C1936, C1937, C1955, C1956, C1957
and R1956 of DCDC board.
Change P/N of C1501, C1503, C1505, C1507 and R3647 on DIGITAL board.
Change P/N of C112, C114 and C117 on DISPLAY board.
Change P/N of C150 on FRONT JACK PWB board.
Change P/N of C250, C281, C284, C487, C548, C2371, C2372 and C2374 on MAIN board.
Change P/N of C983, C985, C986, C993 and C994 on STANDBY board.
Change P/N of C109 on TUNER1 board.
Change P/N of INSTRUCTION MANUAL in page 81.
Change P/N and description of C110, C124 and R146 on DISPLAY board.
Change P/N and description of C489 and C499 on MAIN board.
Change P/N and description of R174 and R176 on POWER KEY board.
Delete of CN2102, CN2103, CN2500, CN2501, CN3001 and CN3509 on DIGITAL board.
Delete of D122 and D123 on FRONT JACK PWB board.
Display
