Sound - Marantz CD5005 Service Manual

3. NO SOUND
3.1. No sound is output when a CD is played back
No sound is output when a CD is
played back.
Is the CUP12662Z_A MAIN PCB connector
disconnected?
• CWC100, CWC101, PFCK10, CN2101, CN3101
NO
Is the CUP12663Z-2 AUDIO PCB connector
disconnected?
• N3504, CN3301
NO
Is the CUP12662Z_A MAIN PCB DAC IC digital
input signal normal?
• IC304 3pin (DATA)
• R160 (BCK)
• R162 (LRCK)
• R370 (MCLK)
(For details, see "3.2. DAC Input Signal
Waveform".)
YES
Is the CUP12662Z_A MAIN PCB DAC IC power
supply normal?
• C342 + side (+3.3V)
• C353 +side (+5V)
YES
Is the CUP12662Z_A MAIN PCB analog signal
output?
• CN2101 2pin(R-), 3pin(R+), CN3101 1pin(L+),
2pin(L-)
NO
Check around the CUP12662Z_A MAIN PCB DAC
IC circuit and soldering, and replace any faulty
parts.
• IC304
YES
Insert any disconnected
connectors.
YES
Insert any disconnected
connectors.
Check the following IC of the CUP12662Z_A MAIN PCB and the
NO
circuit and soldering that handle the output load, and replace
any faulty parts.
• IC304(3pin, 4pin, 5pin, 6pin)
Check the regulator (U3901) +5V_D and regulator (U3907)
NO
+3.3V_D of the CUP12663Z_A POWER PCB and the circuits
and soldering that handle the output load, and replace any
faulty parts.
Is the CUP12663Z-2 AUDIO B'D mute signal output as LOW
YES
(-12V)?
• BN2101 4pin
Check around the CUP12663Z-2 AUDIO PCB mute circuit and
soldering, and replace any faulty parts.
• Q3114,Q3115,Q3214,Q3215
35
YES