Denon RCD-CX1 Service Manual

40
RCD-CX1
3.2. 音声出力せず
(1) LINE(1/2) 入力時
Audio系電源電圧確認
･±12VA
N.G.
半田付けを確認
･ [CY074][CX074]
･ 8U-210025(SMPSUNIT)[ ± 12VA]
O.K.
SELECTOR制御信号確認
･ [SELCK][SELDATA][SELSTB]
N.G.
半田付けを確認
･ [IC302][IC501]
O.K.
VOLUME 用電源電圧確認
･ [IC503]22pin"+7V"O.K.?
･ [IC503]21pin"-7V"O.K.?
･ [IC507]8pin"+7V"O.K.?
･ [IC507]4pin"-7V"O.K.?
N.G.
半田付けを確認
･ [IC504][RL505][TR503][IC507]
･ 8U-210025(SMPSUNIT)[ ± 12VA]
O.K.
VOLUME制御信号確認
･ [VOLCLOCK][VOLDATA][VOLLATCH]
N.G.
半田付けを確認
･ [IC302][IC503]]
O.K.
PREOUTMUTE信号確認
･ [IC302]78pin"H"levelO.K.?
N.G.
半田付けを確認
･ [IC302][RL502][TR505]
O.K.
PREOUT オーディオデータ出力確認
･ [RCA]PREOUTLch
･ [RCA]PREOUTRch
N.G.
半田付けを確認
･ [IC508][IC509]
O.K.
ICEPOWER電源電圧確認
･±33V
･±5V
･-22V
N.G.
半田付けを確認
･ [IC702][IC703][TR708][TR709][ZD701]
･ 8U-210025(SMPSUNIT)[ ± 33V][ ± 12VA]
O.K.
ICEPOWER制御信号確認
･ [IC705]4pin"H"levelO.K.?
N.G.
半田付けを確認
･ [IC705][TR701][IC302]
O.K.
SPMUTE制御信号確認
･ [IC302]77pin"H"levelO.K.?
N.G.
半田付けを確認
･ [IC302][RL701][TR701]
O.K.
SPTERMINAL オーディオデータ出力確認
･ [SPTERMINAL]Lch
･ [SPTERMINAL]Rch
N.G.
半田付けを確認
･ [IC705][RL701][TR701][CX022][CX023]
O.K.
終了
3.2. No Sound
(1) LINE(1/2)-in
Check Power Supply Voltages for AUDIO.
• ± 12V_A
N.G.
Check Soldering.
• [CY074] [CX074]
• 8U-210025 (SMPS UNIT) [ ± 12V_A]
O.K.
Check control signal for SELECTOR.
• [SEL_CK] [SEL_DATA] [SEL_STB]
N.G.
Check Soldering.
• [IC302] [IC501]
O.K.
Check Power Supply Voltages for VOLUME.
• [IC503] 22pin "+7V" O.K.?
• [IC503] 21pin "-7V" O.K.?
• [IC507] 8pin "+7V" O.K.?
• [IC507] 4pin "-7V" O.K.?
N.G.
Check Soldering.
• [IC504] [RL505] [TR503] [IC507]
• 8U-210025 (SMPS UNIT) [ ± 12V_A]
O.K.
Check control signal for VOLUME.
• [VOL_CLOCK] [VOL_DATA] [VOL_LATCH]
N.G.
Check Soldering.
• [IC302] [IC503]
O.K.
Check PREOUT MUTE signal.
• [IC302] 78pin "H"level O.K.?
N.G.
Check Soldering.
• [IC302] [RL502] [TR505]
O.K.
Check PREOUT Audio Data output.
• [RCA] PREOUT Lch
• [RCA] PREOUT Rch
N.G.
Check Soldering.
• [IC508] [IC509]
O.K.
Check Power Supply Voltages for ICE POWER.
• ± 33V
• ± 5V
• -22V
N.G.
Check Soldering.
• [IC702] [IC703] [TR708] [TR709] [ZD701]
• 8U-210025 (SMPS UNIT) [ ± 33V] [ ± 12V_A]
O.K.
Check control signal for ICE POWER.
• [IC705] 4pin "H"level O.K.?
N.G.
Check Soldering.
• [IC705] [TR701] [IC302]
O.K.
Check control signal for SP MUTE.
• [IC302] 77pin "H"level O.K.?
N.G.
Check Soldering.
• [IC302] [RL701] [TR701]
O.K.
Check SP TERMINAL Audio Data output.
• [SP TERMINAL] Lch
• [SP TERMINAL] Rch
N.G.
Check Soldering.
• [IC705] [RL701] [TR701] [CX022] [CX023]
O.K.
END

Denon RCD-CX1 Specifications

General

Brand	Denon
Model	RCD-CX1
Category	Car Receiver
Language	English