Check The Set-Up Process Of F/E Μ-Com; Image Is Not Displayed - Denon DVD-2910 Service Manual

(3) Check the Set-up process of F/E µ-COM
Check Power Supply Voltages.
GU-3612 (MAIN UNIT)
• [IC805] :
+3.3V_D2, +1.8V_D2 O.K.?
+3.3V_A2, +1.8V_A2 O.K.?
O.K.
Check Clock waveform.v
GU-3612 (MAIN UNIT)
• [IC805] : 33pin.
33.87MHz (3.3V), O.K.?
O.K.
Check Reset Signal.
GU-3612 (MAIN UNIT)
• [IC805] : (DRVRST)51pin
"H" level O.K.?
O.K.
END
1.2. Image is not displayed. (Blue-back, DENON wallpaper)
Check Digital output signal for Video. [1]
GU-3612 (MAIN UNIT)
• [IC101] : PCLKG
• [IC101] : HSYNC, VSYNC
• [IC101] : YUV(0-7)
O.K.
Check Digital output signal for Video. [2]
GU-3612 (MAIN UNIT)
• [CX331] : CLKO (21pin)
• [CX331] : HSYNC, VSYNC (11, 10pin)
• [CX331] : PC2-PC9 (23-30pin)
O.K.
Continue to the check process
of GU-3615-1 VIDEO UNIT.
Check Soldering.
N.G.
• [IC605] (BA18BCOFP-E2)
• FB706, FB707 and FB711
Check Soldering.
N.G.
• [IC113] : 12pin
• R191
• [IC607], R692 and R905
Check Soldering.
N.G.
• [IC101] : 145pin
• R907 and R942
Check Soldering.
• [IC101] : 117pin, [IC607], R187 and R189
N.G.
• [IC101] : 118, 119pin
• [IC101] : 106-110, 113-115pin, RA106,
RA107
Check Soldering.
N.G.
• [CX331] : 21pin, R211
• [CX331] : 11, 10pin, R218, R219
• [CX331] : 23-30pin, R203-R210
(3) F/E µ-COM 立ち上げチェック工程
電源電圧確認
GU-3612 (MAIN UNIT)
･ [IC805] :
+3.3V_D2, +1.8V_D2 O.K.?
+3.3V_A2, +1.8V_A2 O.K.?
O.K.
クロックの波形確認
GU-3612 (MAIN UNIT)
･ [IC805] : 33pin.
33.87MHz (3.3V), O.K.?
O.K.
RESET 信号の確認
GU-3612 (MAIN UNIT)
･ [IC805] : (DRVRST) 51pin
"H" level O.K.?
O.K.
終了
1.2. 映像出力せず。 （ブルーバック、DENON 壁紙）
映像用デジタル信号出力確認 [1]
GU-3612 (MAIN UNIT)
･ [IC101] : PCLKG
･ [IC101] : HSYNC, VSYNC
･ [IC101] : YUV (0-7)
O.K.
映像用デジタル信号出力確認 [2]
GU-3612 (MAIN UNIT)
･ [CX331] : CLKO (21pin)
･ [CX331] : HSYNC, VSYNC (11,10pin)
･ [CX331] : PC2-PC9 (23-30pin)
O.K.
GU-3615-1 VIDEO UNIT チェック工程へ
18
DVD-2910/955
半田付けを確認
N.G.
･ [IC605] (BA18BCOFP-E2)
･ FB706, FB707 and FB711
半田付けを確認
N.G.
･ [IC113] : 12pin
･ R191
･ [IC607], R692 and R905
半田付けを確認
N.G.
･ [IC101] : 145pin
･ R907 and R942
半田付けを確認
N.G.
･ [IC101] : 117pin, [IC607], R187 and R189
･ [IC101] : 118, 119pin
･ [IC101] : 106-110, 113-115pin, RA106, RA107
半田付けを確認
N.G.
･ [CX331] : 21pin, R211
･ [CX331] : 11, 10pin, R218, R219
･ [CX331] : 23-30pin, R203-R210