Check The Set-Up Process Of B/E Μ-Com - Denon DVD-2910 Service Manual

(2) Check the Set-up process of B/E µ-COM
Check Power Supply Voltages.
N.G.
GU-3612 (MAIN UNIT)
• [IC101] :
+3.3V_ESS, +2.0V_ESS O.K.?
O.K.
Check Clock waveform.
N.G.
GU-3612 (MAIN UNIT)
• [IC101] :
49, 105, 116pin and 117pin.
27MHz (3.3V), O.K.?
O.K.
Check Reset signal.
N.G.
GU-3612 (MAIN UNIT)
• [IC101] : (RESET) 24 pin.
"H" level O.K.?
O.K.
2
Check I C Signal.
N.G.
GU-3612 (MAIN UNIT)
• [IC101]:
"H" level at 160pin and 161pin.
O.K.
Check Address, Data Bus be-
N.G.
tween
GU-3612 (MAIN UNIT)
[1C101] and [IC102] (Flash Rom).
O.K.
Continue to next step.
Check the Set-up process
of F/E µ-COM.
Check the output level. N.G. Check Soldering.
[ON/ST] : "H" level? • [IC318] : 88pin.
(1) Check Soldering of
N.G.
Check 27MHz (3.3V) at X101.
10pin of IC113. (2) Check Soldering of
IC113 (SM8701).
O.K.
Check Soldering. Of
R186, R187, R137,
R138 and R153.
Check Soldering.
GU-3612 (MAIN UNIT)
• [IC318] : 81pin.
GU-3612 (MAIN UNIT)
• [IC110]
• R117.
Check Soldering.
GU-3612 (MAIN UNIT)
• [IC101] and [IC104] [IC116]
Check Soldering at Address, Data
Bus,Control Signal.
GU-3612 (MAIN UNIT)
• [LD0-LD7], [LCS3,LOE]
(2) B/E µ-COM 立ち上げチェック工程
電源電圧確認
N.G.
GU-3612 (MAIN UNIT)
･ [IC101] :
+3.3V_ESS, +2.0V_ESS
O.K.
N.G.
クロックの波形確認
GU-3612 (MAIN UNIT)
･ [IC101] : 49,105,116pin and 117pin.
27MHz (3.3V)
O.K.
RESET 信号の確認
N.G.
GU-3612 (MAIN UNIT)
･ [IC101] : (RESET) 24 pin.
"H" level
O.K.
２
I C 信号の確認
N.G.
GU-3612 (MAIN UNIT)
･ [IC101] :
"H" level at 160pin and 161pin.
O.K.
[1C101] と [IC102] (Flash Rom) 間の
N.G.
GU-3612(MAIN UNIT)
アドレス、データバスの確認
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
17
DVD-2910/955
出力レベル確認 N.G.
半田付けを確認
[ON/ST] : "H" level? ･ [IC318] : 88pin.
(1) [X101] を確認
N.G.
クロックの波形確認
(2) 半田付けを確認
･ [IC113] : 10pin
･ [IC113] (SM8701).
O.K.
半田付けを確認
･ R186, R187, R137, R138
and R153.
半田付けを確認
GU-3612 (MAIN UNIT)
･ [IC318] : 81pin.
GU-3612 (MAIN UNIT)
･ [IC110]
･ R117.
半田付けを確認
GU-3612 (MAIN UNIT)
･ [IC101] and [IC104] [IC116]
半田付けを確認
GU-3612 (MAIN UNIT)
･ [LD0-LD7], [LCS3, LOE]