Denon DVD-2910 Service Manual

16
DVD-2910/955
TROUBLE SHOOTING
1. GU-3612 MAIN UNIT
1.1. FL TUBE doesn’t light
(1) Check the Set-up process of Syatem µ-COM
Check Power Supply Voltages.
GU-3612 (MAIN UNIT)
• [IC318] : 80, 14
+3.3V_D1, +3.3V_NSW
N.G. Check Soldering.
• CX141 on MAIN UNIT.
O.K.
Check Oscillation waveform.
GU-3612 (MAIN UNIT)
• [IC318] :
16MHz at 13pin.
N.G. Check Soldering.
• X302 on MAIN UNIT.
O.K.
Check Power Supply Voltages.
GU-3612 (MAIN UNIT)
• [IC318] :
"H" level at 39pin? "L" level at 7pin and
44pin?
N.G. Check Soldering.
• IC318 on MAIN UNIT.
O.K.
Check Reset Signal
GU-3612(MAIN UNIT)
• [IC318] :
"H" level at 10pin?
N.G. Check Soldering.
• IC319 (Reset IC) on MAIN UNIT.
O.K.
Check Data Bus between.
GU-3616-3 (DISPLAY UNIT)
FLD Driver (GU-3614-3 , IC101)
• [VFD_RST] : "H" level?
N.G.
(1) Check soldering of CY171 on MAIN UNIT.
(2) GU-3616-3 is N.G. (No Good).
O.K.
Continue to next step.
Check the Set-up process of B/E µ-COM.
トラブルシューティング
1. GU-3612MAINUNIT
1.1. FL 管点灯せず
(1) システムμ-COM立ち上がりチェック工程
電源電圧確認
GU-3612(MAINUNIT)
･ [IC318]:80,14
+3.3VD1,+3.3VNSW
N.G.
半田付けを確認
･ MAINUNIT の CX141
O.K.
発振波形確認
GU-3612(MAINUNIT)
･ [IC318]:
16MHzat13pin.
N.G.
半田付けを確認
･ MAINUNIT の X302
O.K.
電源電圧確認
GU-3612(MAINUNIT)
･ [IC318]:
"H"levelat39pin?"L"levelat7pinand44pin?
N.G.
半田付けを確認
･ MAINUNIT の IC318
O.K.
RESET 信号の確認
GU-3612(MAINUNIT)
･ [IC318]:
"H"levelat10pin?
N.G.
半田付けを確認
･ MAINUNIT の IC319(ResetIC)
O.K.
データバスの確認
GU-3616-3(DISPLAYUNIT)
FLDDriver(GU-3616-3,IC101)]
･ [VFDRST]:"H"level?
N.G.
(1) MAINUNIT の CY171 の半田付けを確認
(2) GU-3616-3の不良
O.K.
次のステップへ
(2)B/Eμ-COM 立ち上げチェック工程へ
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Denon DVD-2910 Specifications

General

Brand	Denon
Model	DVD-2910
Category	DVD Player
Language	English