31
DVD-3930/3930CI
2. GU-3749-1 (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-3749-1(MAIN UNIT)
・ [IC157] 69
+3.3V̲NSW OK?
N.G.
半田付けを確認
GU-3749-1(MAIN UNIT)
・ MAIN UNIT の CY132
O.K.
電源電圧確認
GU-3749-1(MAIN UNIT)
・ [IC157] 83, 102 [IC154] 1
+1.2V̲DV3.2, +3.3̲A, +3.3̲D1 OK?
N.G.
出力レベル確認
GU-3749-1(MAIN UNIT)
・ [CY132] 13pin
[ON/ST]: "H" level?
N.G.
半田付けを確認
GU-3749-1(MAIN UNIT)
・ [IC403] 2pin
O.K.
半田付けを確認
GU-3749-1(MAIN UNIT)
[IC102](PQ012FZ01ZP)
RESET 信号の確認
GU-3749-1(MAIN UNIT)
・ [IC157]
"H" level at 84pin?
N.G.
半田付けを確認
GU-3749-1(MAIN UNIT)
・ [IC153] (ResetIC), R237
O.K.
発振波形確認
GU-3749-1(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-3749-1(MAIN UNIT)
・ [IC154] 7, 15pin
N.G.
半田付けを確認
GU-3749-1(MAIN UNIT)
・ MAIN UNIT の X150
・ [IC154] (SM8707)
O.K.
半田付けを確認
GU-3749-1(MAIN UNIT)
・ R271, R273, R274,
R264, R292, R294
バスラインの確認
GU-3749-1(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-3749-1(MAIN UNIT)
・ [LD0-LD15], [LCS3, LOE]
O.K.
バスラインの確認
GU-3749-1(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-3749-1(MAIN UNIT)
・ [IC157] 66, 67
"H" ⇔ "L" 切替
N.G.
半田付けを確認
GU-3749-1(MAIN UNIT)
・ [IC152] と [IC157]
O.K.
O.K.
O.K.
2. GU-3749-1 (MAIN UNIT)
2.1. FL TUBE dosen't light
(1) Check the Set-up process of System
Check Power Supply Voltages.
GU-3749-1(MAIN UNIT)
• [IC157] 69
+3.3V_NSW OK?
N.G.
Check Soldering.
GU-3749-1(MAIN UNIT)
• MAIN UNIT: CY132
O.K.
Check Power Supply Voltages.
GU-3749-1(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-3749-1(MAIN UNIT)
• [CY132] 13pin
[ON/ST]: "H" level?
N.G.
Check Soldering.
GU-3749-1(MAIN UNIT)
• [IC403] 2pin
O.K.
Check Soldering.
GU-3749-1(MAIN UNIT)
• [IC102](PQ012FZ01ZP)
Check Reset signal.
GU-3749-1(MAIN UNIT)
• [IC157]
"H" level at 84pin?
N.G.
Check Soldering.
GU-3749-1(MAIN UNIT)
• [IC153](Reset IC), R237
O.K.
Check Oscillation waveform.
GU-3749-1(MAIN UNIT)
• [IC157] 162, 163, 186, 190pin
27MHz at 162, 163, 183 pin
33.87MHz at 190pin
N.G.
Check Clock waveform.
GU-3749-1(MAIN UNIT)
• [IC154] 7, 15pin
N.G.
Check Soldering.
GU-3749-1(MAIN UNIT)
• MAIN UNIT: X150
• [IC154](SM8707)
O.K.
Check Soldering.
GU-3749-1(MAIN UNIT)
• R271, R273, R274, R253,
R264, R292, R294
Check Bus Line.
Check Address, Data Bus between
GU-3749-1(MAIN UNIT)
• [IC157] and [IC155](Flash Rom)
"H"
⇔
"L" alternate?
N.G.
Check Soldering.
GU-3749-1(MAIN UNIT)
• [LD0-LD15], [LCS3, LOE]
O.K.
Check Bus Line.
Check Address, Data Bus between
GU-3749-1(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-3749-1(MAIN UNIT)
• [IC157]
"H"
⇔
"L" alternate?
N.G.
Check Soldering.
GU-3749-1(MAIN UNIT)
• [IC152] and [IC157]
O.K.
O.K.
O.K.
Содержание DVD-3930
Страница 43: ...43 DVD 3930 3930CI BLOCK DIAGRAM...
Страница 51: ...51 DVD 3930 3930CI BD7956FS MA IC151 BD7956FS Block diagram 1 27 54 28...
Страница 57: ...57 DVD 3930 3930CI CXD2753R MA IC401 Pin Assignment Block Diagram...
Страница 67: ...67 DVD 3930 3930CI ADV7324 MA IC501 550...
Страница 72: ...72 DVD 3930 3930CI PRINTED WIRING BOARDS GU 3749 MAIN A VIDEO P W B UNIT COMPONENT SIDE...
Страница 73: ...73 DVD 3930 3930CI FOIL SIDE...
Страница 74: ...74 DVD 3930 3930CI GU 3750 POWER DISPLAY P W B UNIT COMPONENT SIDE...
Страница 75: ...75 DVD 3930 3930CI FOIL SIDE...
Страница 76: ...76 DVD 3930 3930CI GU 3751 AUDIO P W B UNIT COMPONENT SIDE...
Страница 77: ...77 DVD 3930 3930CI FOIL SIDE...
Страница 78: ...78 DVD 3930 3930CI GU 3752 DIGITAL VIDEO P W B UNIT COMPONENT SIDE...
Страница 79: ...79 DVD 3930 3930CI GU 3793 FAN POWER P W B UNIT FOIL SIDE COMPONENT SIDE FOIL SIDE...
Страница 151: ...151 DVD 3930 3930CI WIRING DIAGRAM...
Страница 154: ...154 DVD 3930 3930CI GU 3749 2 VIDEO P W B V6 V7 V8 V1 V2 V3 V4 V5...