Denon DN-X1600 Service Manual page 26

FLOW CHART NO.11 (8U-210092:INPUT UNIT)
Function of sound for master output do not operate
normally.
・Set the line input selector button to "CD".
・Set the fader assign switch to "THRU".
・Set the channel fader to "MAX".
・Set the master level control to "MAX".
Are audio signals output to IC102 7pin(left channel),
1pin(right channel)when an audio signal of 1 kHz 0
dBV is input externally to the CD input?
Is 2pin of CY231 (RELAY control signal)L, and has
been the TR109 collector (RELAY signal) H(+5V)?
Are the audio signals outputted to 5pin(Lch) and
6pin(Rch) of RL101?
Are the audio signals outputted to 7pin and 1pin of
IC103(Lch), IC104(Rch)?
Are the digital audio signals(0-3.3V) outputted from
15pin(DATA) of IC105(L/Rch)?
Are the digital audio signals outputted from 3pin of
IC206?
Check periphery circuit of 12pin of CY231 from
3pin of IC206, and replace it if defective.
O.K.
O.K.
O.K.
O.K.
O.K.
O.K.
O.K.
Check the input signal from JK101 to IC108 and
N.G.
their periphery, and service it if detective.
When the input signal is correct, IC108 is replaced.
N.G.
Check TR109 and the periphery circuit, and service
it if defective.
Check periphery circuit of RL101 from IC108, and
N.G.
service it if defective.
When the input signal is correct, RL101 is replaced.
Check periphery circuit of IC103,IC104 from 5pin
and 6pin of RL101, and service it if defective.
N.G.
When the input signal is correct, IC103,IC104 is
replaced.
Check that IC105 9pin is "L" (with Fs: 44.1 k/ 48
k),"H" (with Fs: 96 k) and that 19pin is "H". Check
N.G.
the signal input to 16pin, 17pin and 18pin.
If there is no input signal, repair the defective part.
When the input signal is correct, IC105 is replaced.
Check IC206 and the periphery circuit, and service
N.G.
it if defective.
When the input signal is correct, IC206 is replaced.
26