17
DVD-2910/955
(2) Check the Set-up process of B/E
µ
-COM
Check Power Supply Voltages.
GU-3612 (MAIN UNIT)
• [IC101] :
+3.3V_ESS, +2.0V_ESS O.K.?
N.G.
Check the output level.
[ON/ST] : "H" level?
N.G.
Check Soldering.
• [IC318] : 88pin.
O.K.
Check Clock waveform.
GU-3612 (MAIN UNIT)
• [IC101] :
49, 105, 116pin and 117pin.
27MHz (3.3V), O.K.?
N.G.
Check 27MHz (3.3V) at
10pin of IC113.
N.G.
(1) Check Soldering of
X101.
(2) Check Soldering of
IC113 (SM8701).
O.K.
Check Soldering. Of
R186, R187, R137,
R138 and R153.
Check Reset signal.
GU-3612 (MAIN UNIT)
• [IC101] : (RESET) 24 pin.
"H" level O.K.?
N.G.
Check Soldering.
GU-3612 (MAIN UNIT)
• [IC318] : 81pin.
GU-3612 (MAIN UNIT)
• [IC110]
• R117.
O.K.
Check I
2
C Signal.
GU-3612 (MAIN UNIT)
• [IC101]:
"H" level at 160pin and 161pin.
N.G.
Check Soldering.
GU-3612 (MAIN UNIT)
• [IC101] and [IC104] [IC116]
O.K.
Check Address, Data Bus be-
tween
GU-3612 (MAIN UNIT)
[1C101] and [IC102] (Flash Rom).
N.G.
Check Soldering at Address, Data
Bus,Control Signal.
GU-3612 (MAIN UNIT)
• [LD0-LD7], [LCS3,LOE]
O.K.
Continue to next step.
Check the Set-up process
of F/E
µ
-COM.
O.K.
(2) B/E
µ
-
COM 立ち上げチェック工程
電源電圧確認
GU-3612 (MAIN UNIT)
・ [IC101] :
+3.3V̲ESS, +2.0V̲ESS
N.G.
出力レベル確認
[ON/ST] : "H" level?
N.G.
半田付けを確認
・ [IC318] : 88pin.
O.K.
クロックの波形確認
GU-3612 (MAIN UNIT)
・ [IC101] : 49,105,116pin and 117pin.
27MHz (3.3V)
N.G.
クロックの波形確認
・ [IC113] : 10pin
N.G.
(1) [X101] を確認
(2) 半田付けを確認
・ [IC113] (SM8701).
O.K.
半田付けを確認
・ R186, R187, R137, R138
and R153.
RESET 信号の確認
GU-3612 (MAIN UNIT)
・ [IC101] : (RESET) 24 pin.
"H" level
N.G.
半田付けを確認
GU-3612 (MAIN UNIT)
・ [IC318] : 81pin.
GU-3612 (MAIN UNIT)
・ [IC110]
・ R117.
O.K.
I
2
C 信号の確認
GU-3612 (MAIN UNIT)
・ [IC101] :
"H" level at 160pin and 161pin.
N.G.
半田付けを確認
GU-3612 (MAIN UNIT)
・ [IC101] and [IC104] [IC116]
O.K.
[1C101] と [IC102] (Flash Rom) 間の
GU-3612(MAIN UNIT)
アドレス、データバスの確認
N.G.
半田付けを確認
GU-3612 (MAIN UNIT)
・ [LD0-LD7], [LCS3, LOE]
O.K.
次のステップへ
(3) F/E μ-COM 立 ち 上げ チ ェ ッ ク
工程へ
O.K.
Summary of Contents for DVD-2910
Page 29: ...29 DVD 2910 955 BLOCK DIAGRAM ...
Page 48: ...48 DVD 2910 955 CXD2753R IC602 Pin Assignment Block Diagram ...
Page 79: ...79 DVD 2910 955 TA76432FC IC902 PC123 IC909 COLLECTOR EMITTER ANODE CATHODE TOP VIEW ...
Page 81: ...81 DVD 2910 955 PRINTED WIRING BORDS GU 3612 MAIN PWB P W B UNIT ASS Y COMPONENT SIDE ...
Page 82: ...82 DVD 2910 955 GU 3612 MAIN PWB P W B UNIT ASS Y FOIL SIDE ...
Page 83: ...83 DVD 2910 955 GU 3615 VODEO P W B UNIT ASS Y COMPONENT SIDE ...
Page 84: ...84 DVD 2910 955 GU 3615 VODEO P W B UNIT ASS Y FOIL SIDE ...
Page 85: ...85 DVD 2910 955 GU 3616 AUDIO POWER P W B UNIT ASS Y COMPONENT SIDE ...
Page 86: ...86 DVD 2910 955 GU 3616 AUDIO POWER P W B UNIT ASS Y FOIL SIDE ...
Page 117: ...DVD 2910 955 117 GU 3615 1 VIDEO P W B V6 V7 V8 V1 V2 V3 V4 V5 ...