Denon DVD-2930 Service Manual

28
DVD-2930/2930CI
2. GU-3729-1(MAINUNIT)
2.1. FL 管点灯せず
(1)
システム立ち上がりチェック工程
電源電圧確認
GU-3729-1(MAINUNIT）
･ [IC157]69
+3.3VNSWOK?
N.G.
半田付けを確認
GU-3729-1(MAINUNIT)
･MAINUNITのCY132
O.K.
電源電圧確認
GU-3729-1(MAINUNIT)
･ [IC157]83,102[IC154]1
+1.2VDV3.2,+3.3A,+3.3D1OK?
N.G.
出力レベル確認
GU-3729-1(MAINUNIT)
･ [CY132]13pin
[ON/ST]:"H"level?
N.G.
半田付けを確認
GU-3729-1(MAINUNIT)
･ [IC403]2pin
O.K.
半田付けを確認
GU-3729-1(MAINUNIT)
[IC102](PQ012FZ01ZP)
RESET 信号の確認
GU-3629-1(MAINUNIT)
･ [IC157]
"H"levelat84pin?
N.G.
半田付けを確認
GU-3729-1(MAINUNIT)
･ [IC153](ResetIC),R237
O.K.
発振波形確認
GU-3729-1(MAINUNIT)
･ [IC157]162,163,186,190pin
27MHzat162,163,186pin
33.87MHzat190pin
N.G.
クロックの波形確認
GU-3729-1(MAINUNIT)
･ [IC154]7,15pin
N.G.
半田付けを確認
GU-3729-1(MAINUNIT)
･ MAINUNIT の X150
･ [IC154](SM8707)
O.K.
半田付けを確認
GU-3729-1(MAINUNIT)
･ R271,R273,R274,
R264,R292,R294
バスラインの確認
GU-3729-1(MAINUNIT)
･ [IC157] と [IC155](FlashRom) 間の
アドレス、データバスの確認
"H"⇔ "L"切替
N.G.
半田付けを確認
GU-3729-1(MAINUNIT)
･ [LD0-LD15],[LCS3,LOE]
O.K.
バスラインの確認
GU-3729-1(MAINUNIT)
･ [IC157] と [IC156][IC158](SDRAM)
間のアドレス、データバスの確認
"H"⇔ "L"切替
N.G.
半田付けを確認
･ アドレス、データ、制御信号
[MDQ0-24],[MA0-9],[NCAS],[NRAS]
･ [IC156][IC158] と
その周辺回路の半田付けを確認
O.K.
I
２
C信号の確認
GU-3729-1(MAINUNIT)
･ [IC157]66,67
"H"⇔ "L"切替
N.G.
半田付けを確認
GU-3729-1(MAINUNIT)
･ [IC152] と [IC157]
O.K.
O.K.
O.K.
2. GU-3729-1 (MAIN UNIT)
2.1. FL TUBE dosen't light
(1) Check the Set-up process of System
Check Power Supply Voltages.
GU-3729-1(MAIN UNIT)
• [IC157] 69
+3.3V_NSW OK?
N.G.
Check Soldering.
GU-3729-1(MAIN UNIT)
• MAIN UNIT: CY132
O.K.
Check Power Supply Voltages.
GU-3729-1(MAIN UNIT)
• [IC157] 83, 102 [IC154] 1
+1.2V_DV3.2, +3.3_A, +3.3_D1 OK?
N.G.
Check the output level.
GU-3729-1(MAIN UNIT)
• [CY132] 13pin
[ON/ST]: "H" level?
N.G.
Check Soldering.
GU-3729-1(MAIN UNIT)
• [IC403] 2pin
O.K.
Check Soldering.
GU-3729-1(MAIN UNIT)
• [IC102](PQ012FZ01ZP)
Check Reset signal.
GU-3729-1(MAIN UNIT)
• [IC157]
"H" level at 84pin?
N.G.
Check Soldering.
GU-3729-1(MAIN UNIT)
• [IC153](Reset IC), R237
O.K.
Check Oscillation waveform.
GU-3729-1(MAIN UNIT)
• [IC157] 162, 163, 186, 190pin
27MHz at 162, 163, 183 pin
33.87MHz at 190pin
N.G.
Check Clock waveform.
GU-3729-1(MAIN UNIT)
• [IC154] 7, 15pin
N.G.
Check Soldering.
GU-3729-1(MAIN UNIT)
• MAIN UNIT: X150
• [IC154](SM8707)
O.K.
Check Soldering.
GU-3729-1(MAIN UNIT)
• R271, R273, R274, R253,
R264, R292, R294
Check Bus Line.
Check Address, Data Bus between
GU-3729-1(MAIN UNIT)
• [IC157] and [IC155](Flash Rom)
"H" ⇔ "L" alternate?
N.G.
Check Soldering.
GU-3729-1(MAIN UNIT)
• [LD0-LD15], [LCS3, LOE]
O.K.
Check Bus Line.
Check Address, Data Bus between
GU-3729-1(MAIN UNIT)
•
[IC157], [IC156] and [IC158] (SDRAM)
"H" ⇔ "L" alternate?
N.G.
Check Soldering.
• Address, Data Bus, Control Signal.
[MDQ0-24], [MA0-9], [NCAS], [NRAS]
• Check the soldering [IC156] [158]and
circumference soldering of [IC156] [158].
O.K.
Check I
2
C Signal.
GU-3729-1(MAIN UNIT)
• [IC157]
"H" ⇔ "L" alternate?
N.G.
Check Soldering.
GU-3729-1(MAIN UNIT)
• [IC152] and [IC157]
O.K.
O.K.
O.K.

Denon DVD-2930 Specifications

General

Brand	Denon
Model	DVD-2930
Category	DVD Player
Language	English