No Sound, Noise Generated - Denon RCD-M39 Service Manual

2. No Sound, Noise generated

2.1. CD PLAY
Check Power Supply Voltages for CD.
MCU_CD B'D
• [PMUP] : 1,2pin +8VM
• [PMMO] : 6,7pin USB_5V
POWWER B'D
• [PMSN] : 6pin DC_9V
Check Power Supply Voltages for CD.
MCU_CD B'D
• D+3.3V [IC22]: 2pi 3.3V OK?
• +1.5V [IC23] : 2pi 1.5V OK?
Check Power Supply Voltages for DAC.
INPUT B'D
• [IC57] :1,8,20pin 3.3V OK?
• [IC54] :2pin 3.3V OK?
Check Reset signal for CD.
MCU_CD B'D
• [IC21] : 69pin /RST "H" level O.K.?
• [IC41] : 61pin DSP_RST "H" level O.K.?
• [IC11] : 58pin CD_DSP_RST "H" level O.K.?
Check Oscillation waveform.
MCU_CD B'D
• [IC21] : 49pin XO
16.9344MHz OK?
Check Oscillation waveform.
MCU_CD B'D
• [IC41]:73pin X2
9.0MHz OK?
Check Clock Signal for DAC.
INPUT B'D
• [IC57]:12pin SCK
12.288MHz OK?
Check controll signal for DAC.
INPUT B'D
• [IC57] : 17pin XSMT (Mute) "H" OK?
OK
OK
OK
OK
OK
OK
OK
OK
Check Soldering.
• MCU_CD B'D [PMUP] : 1,2pin +8VM
NG
[PMMO] : 7pin USB_5V
• POWER B'D
Check Parts
• [IC71]
Check Soldering.
NG • [IC22] on MCU_CD B'D
• [IC23] on MCU_CD B'D
Check Parts
• [IC22],[IC23]
Check Soldering.
NG
• [CBIB] : 1pin SW+5V
• POWER B'D
Check Soldering.
NG
• [IC11] : 58pin CD_DSP_RST on MCU_CD B'D
• [IC41] : 61pin DSP_RST on MCU_CD B'D
NG
Check Soldering.
• [X201] on MCU_CD B'D
NG
Check Soldering.
• [X401] on MCU_CD B'D
Check Soldering.
NG
• [IC21] on MCU_CD B'D
• [FCMC] on MCU_CD B'D
• [FCIC] on INPUT B'D
Check Soldering.
• [IC11] on MCU_CD B'D
NG
• [FCMC] : 8pin DAC_XSMT
• [FCIC] 8pin DAC_XSMT
46