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HTP-SB300
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Check the waveform of SPDIF
output of JK102-pin 3(input).
NG
NG
OK
OK
Check audio output after OPTICAL
input.
Note: Input signal uses Dolby 5.1ch
source.
Check the waveform of IC104
(CS8422)-pin 2(C105).
Replace the
IC701(IL1117-3.3).
OK
Replace the
IC703(KIA7027).
NG
Replace the IC104(CS8422).
NG
Replace the MOD101 Wireless
TX Module.
After Re-pairing operation (press the STEREO key (main
unit), SHIFT key (remote control unit),then TV CH- key
(remote control unit) after pressing the SYSTEM key (remote
control unit)), does GREEN LED of FRONT blink at intervals
of 250 msec?
NG
NG
OK
OK
OK
Do LEDs of Wireless Subwoofer
and PWB (PCB) Assy (FRONT/
KEY) light in GREEN?
After turned OFF the power supply
of Subwoofer and then ON, check
the GREEN LED lights.
Check the voltages of CP702-pin 1
(+5 V) and CP702-pin 6(+31 V) of
PWB(PCB) Assy (SW MAIN/LED).
NG
Replace the PWB(PCB) Assy
(SMPS).
NG
Is the voltage of MOD701-pin 2
(+5 V) 5 V?
Check the FB711.
NG
OK
OK
OK
Is the voltage of MOD701-pin 9
(MOD_RESET) High (3.3 V)?
Is the voltage of IC703(KIA7027)
-pin 1(3.3 V) 3.3 V?
NG
Is the voltage of MOD701-pin 3
(GREEN_LED) High (3.3 V)?
Replace the MOD701
Wireless RX Module.
NG
OK
Is the voltage of CP701-pin 3
(GREEN) High (3.3 V)?
Replace the
Q702(2SC2412K).
NG
Replace the
IC104(CS8422).
NG
OK
Is the voltage of CP703-pin 3
(GREEN) High (3.3 V)?
Replace the Connector Assy
of 3 Pin LED PCB.
NG
Replace the LD701
(RED/GREEN Dual LED).
OK
Replace the JK102 Optical Jack.
Check the I2S waveforms of MOD101
-pins 7(I2S_DATA),8(I2S_LRCK) and
12(I2S_BCK).
NG
OK
Check the subwoofer audio output
after OPTICAL input.
Note: Input signal uses Dolby 5.1ch
source.
After initialization (press the STEREO
key and HDMI1 key (main unit)),
turn the AC POWER OFF.
Check the waveforms of IC104(CS8422)
-pins 23(R120),24(R121) and 25(R122).
Replace the R120,R121,R122 and
R307,R308,R309.
Replace the MOD701
Wireless RX Module.
NG
OK
Check the waveforms of I2C communi-
cation port of MOD701-pins 15 and 16.
Replace the IC702(STA326).
Replace the IC702(STA326).
Replace the MOD701
Wireless RX Module.
NG
OK
Check the I2S output waveforms of
MOD701-pins 8(MCLK),12(SDATA),
13(LRCK) and 14(BCK) of Subwoofer.
NG
OK
After opening R706,R708,R709 and
R710, check the I2S output wavefrm of
MOD701-pins 8,12,13 and 14.
Check the output waveforms of IC702
(STA326)-pins 3 and 16(PWM Output).
NG
OK
Replace the L701.
Replace the Speaker Unit.
After opening PN701, check the
output wavefrm.
NG
OK
C
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