Troubleshooting - Denon S-52 Service Manual

TROUBLE SHOOTING
● ADV-S52
1. LCD doesn't display
(1) Check the Set-up process of System -COM and BF(DSP)
Check Power Supply Voltages for System uCOM.
1U-3846-1(MAIN UNIT)
+3.3V_DNS
O.K.
Check Reset signal for System uCOM.
1U-3846-1(MAIN UNIT)
[IC701]:10pin
"H"level O.K.?
O.K.
Check Oscillation waveform.
1U-3846-1(MAIN UNIT)
[IC701]:11pin
24MHz OK?
O.K.
Check Power On Signal.
1U-3846-1(MAIN UNIT)
[IC701]:
"H"level at [M_POWER]19pin
O.K.
Check Power Supply Voltages for LCD.
1U-3846-1(MAIN UNIT)
+12V_D1
+8.0V_D1
O.K.
Check Power Supply Voltages for BF(DSP)(IC101).
1U-3846-1(MAIN UNIT)
+3.3V_D1
+1.2V_D1
O.K.
Check Reset signal for BF(DSP)
1U-3846-1(MAIN UNIT)
[IC701]:35pin[BF_RST]
"H"level O.K.?
O.K.
Check Clock Signal for BF(DSP)
1U-3846-1(MAIN UNIT)
[256FS_48_BF]
12.288MHz OK?
O.K.
N.G Check Soldering.
1U-3859-4(STANDBY TRANS UNIT).
CX051 on MAIN UNIT.
N.G Check Soldering.
IC703 on MAIN UNIT.
IC701 on MAIN UNIT.
N.G Check Soldering.
X702 on MAIN UNIT.
N.G Check Soldering.
IC701 on MAIN UNIT.
1U-3859-4(STANDBY TRANS UNIT).
Check Soldering.
N.G 1U-3859-1(POWER UNIT).
CX111 on MAIN UNIT.
IC108 on MAIN UNIT.
CX262 on MAIN UNIT.
Check Soldering.
N.G 1U-3859-1(POWER UNIT).
CX111 on MAIN UNIT.
IC110 on MAIN UNIT.
Check Soldering.
N.G IC701 on MAIN UNIT.
IC101 on MAIN UNIT.
IC103 on MAIN UNIT.
Check Soldering.
N.G IC303 on MAIN UNIT.
X301 on MAIN UNIT.
トラブルシューティング
● ADV-S52
トラブルシューティング
1. LCD表示せず
(1) システムμ-COMとBF(DSP)立ち上がりチェック工程
ｼｽﾃﾑﾏｲｺﾝ用電源電圧確認
1U-3846-1(MAIN UNIT)
・ +3.3V_DNS
O.K.
ｼｽﾃﾑﾏｲｺﾝ用RESET信号の確認
1U-3846-1(MAIN UNIT)
・ [IC701]:10pin
"H"level O.K.?
O.K.
発振波形確認
1U-3846-1(MAIN UNIT)
・ [IC701]:11pin
24MHz OK?
O.K.
POWER ON 信号の確認
1U-3846-1(MAIN UNIT)
・ [IC701]:
"H"level at [M_POWER]19pin
O.K.
LCD用電源電圧確認
1U-3846-1(MAIN UNIT)
・ +12V_D1
・ +8.0V_D1
O.K.
BF(DSP)(IC101)用電源電圧確認
1U-3846-1(MAIN UNIT)
・ +3.3V_D1
・ +1.2V_D1
O.K.
BF(DSP)用RESET信号の確認
1U-3846-1(MAIN UNIT)
・ [IC701]:35pin[BF_RST]
"H"level O.K.?
O.K.
BF(DSP)用ｸﾛｯｸ信号の確認
1U-3846-1(MAIN UNIT)
・ [256FS_48_BF]
12.288MHz OK?
O.K.
37
S-52/S-52DAB/S-32
N.G 半田付けを確認
・ 1U-3859-4(STANDBY TRANS UNIT).
・ CX051 on MAIN UNIT.
N.G 半田付けを確認
・ IC703 on MAIN UNIT.
・ IC701 on MAIN UNIT.
N.G 半田付けを確認
・ MAIN UNITのX702
N.G 半田付けを確認
・ IC701 on MAIN UNIT.
・ 1U-3859-4(STANDBY TRANS UNIT).
半田付けを確認
N.G ・ 1U-3859-1(POWER UNIT).
・ CX111 on MAIN UNIT.
・ IC108 on MAIN UNIT.
・ CX262 on MAIN UNIT.
半田付けを確認
N.G ・ 1U-3859-1(POWER UNIT).
・ CX111 on MAIN UNIT.
・ IC110 on MAIN UNIT.
半田付けを確認
N.G ・ IC701 on MAIN UNIT.
・ IC101 on MAIN UNIT.
・ IC103 on MAIN UNIT.
半田付けを確認
N.G ・ IC303 on MAIN UNIT.
・ X301 on MAIN UNIT.