Check the input of Volume IC (DIGITAL PCB)
[IC480 : 62pin] PCM1690_FR
[IC480 : 63pin] PCM1690_FL
[IC480 : 64pin] PCM1690_SR
[IC480 : 65pin] PCM1690_SL
[IC480 : 66pin] PCM1690_SW
[IC480 : 67pin] PCM1690_C
Check the connector [CN32A] (DIGITAL PCB)
[CN32A : 1pin] SR_OUT
[CN32A : 3pin] SL_OUT
[CN32A : 5pin] C_OUT
[CN32A : 7pin] FR_OUT
[CN32A : 9pin] FL_OUT
[CN32A : 11pin] SW_OUT
Check the input of Digital AMP IC*2
(D-AMP PCB)
[IC601/IC602/IC603]
[18pin] RESET
[5pin] INPUT_A
[6pin] INPUT_B
[16pin] INPUT_C
[17pin] INPUT_D
Check the output of Digital AMP IC (D-AMP PCB)
[IC601/IC602/IC603]
[39, 40pin] OUT_A
[35pin] OUT_B
[32pin] OUT_C
[27, 28pin] OUT_D
Check the soldering of peripheral parts.
If there are no abnormalities, [IC451 MAIN DAC IC]
or [IC452/IC453/IC454 OP-AMP part] is faulty.
Check the soldering of peripheral parts.
If there are no abnormalities, [IC480 Volume IC] is
faulty.
Check the soldering of the parts around the [IC631/
IC632/ IC633/ IC634/ IC635 OP - AMP] part
Check the soldering of peripheral parts.
If there are no abnormalities, [Digital AMP IC] is
faulty.
OK
OK
OK
OK
NO
NO
NO
NO
3. No audio output
(HDMI OUT (ARC))
4. No audio output
(HDMI IN)
Check the input of DIR
Is the SPDIF signal OK?
[IC432 : 37pin] HPD_SPDIF_ARC
Check the input of PLD (DIGITAL PCB)
[IC431 : 35pin] DIRA_MCLK
[IC431 : 36pin] DIRA_BCLK
[IC431 : 37pin] DIRA_LRCK
[IC431 : 38pin] DIRA_DATA
See "Check the input of DSP*1" in item 2
Is there a connection between the Input Source
and this unit?
Check the input of PLD (DIGITAL PCB)
[IC431 : 92pin] MCLK_OUT
[IC431 : 95pin] SCLK_OUT
[IC431 : 96pin] AP5_OUT(LRCK)
[IC431 : 97pin] AP1_OUT
[IC431 : 98pin] AP2_OUT
[IC431 : 99pin] AP3_OUT
[IC431 : 100pin] AP4_OUT
See "Check the input of DSP*1" in item 2
Check the soldering of peripheral parts.
If there are no abnormalities, HDMI OUT terminal
[JK201] is faulty.
Check the soldering of peripheral parts.
If there are no abnormalities, [IC432 DIR IC] is
faulty.
Connect a device such as an STB or BD player to
this unit according to "QSG".
Check the soldering of peripheral parts.
If there are no abnormalities, [IC201 HDMI IC] is
faulty.
YES
YES
OK
OK
OK
NG
NG
NO
NG
Is there a connection between the TV and this
unit?
Connect TV to this unit according to "QSG".
NO
47
Caution in
servicing
Electrical Mechanical Repair Information Updating
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