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Analog output (play mode)
When trouble is found in the analog signal output.
Check voltage
No
pin No2,3 of DAC(NIC1,
AK4324) at main
PCB : 5V?
Yes
Check voltage pin
No
No5 of MIC1(DAC,
AK4324):5V?
Yes
Check wave
input pin No 4(MCLK:
No
16,9344MHz),6(BCK),7(DATA),
8(LRCK), of NIC1
(DAC,AK4324)
: normal?
Yes
Check voltage
No
pin No 9 of NIC1(DAC,
AK4324) : 0V?
Yes
Check analog
No
wave output of AR1,2,3,4
(10k)
Yes
Check voltage
of RJW2 : -8V?
RJW4 : +8V?
Yes
Check analog
No
wave output at pin No1,7
of AIC2(4560)
Yes
Check voltage
No
base of MQ5,MQ6(C945)
:0.6V
Yes
Check for micom mute line,
MR6,MQ3,MQ4,MD4,MD5,MQ1
Check voltage
No
output of RIC2(78L05)
:5V?
Yes
Check NL1(10uF)
Check voltage
No
output of RIC3(78L05)
:5V?
Yes
Check for NC20,NR20
Check wave
No
-Check connecting of NCW1(17P FPC)
output pin No 1,2,3,4, of
-Replace mechanism
NCW1(17P FPC)
:normal?
Yes
Check NR1,2,3,4
-Check for mute micom and RCW2
Check solder of NIC1
No
Check for AIC1,AIC2(4560),
OP amp 4560
-Check solder of AJA1
-Check analog wave of AJA1
-Check connector of audio cable
Check voltage
No
positive of RC7(6800uF/25v)
input of RIC2(78L05)
:8V?
Yes
Replace RIC2
Check for RC7,RD5,RD6,RD7,RD8,
RFU3,RCW1,PFU1/PFU2
Check voltage
No
positive of MC1(10uF/
50V) :15V?
Yes
Replace RIC3
Check voltage
output of
No
RC6(2200uF/25) : +12V?
RC7(2200uF/25V) : -12V?
Yes
Check for RQ2,RZD2,RR2,
RQ1,RZD1,RR1
Check voltage
No
at main PCB : 12V?
Yes
Replace RQ3,
RZD3,RR3
Check for MC1,MR1,MD1,
RCW1,RFU3,PFU1/PFU2
Check for RD1,2,3,4(IN4002)
RFU1,RFU2(1A),RCW1,PFU1,PFU2
XL-R910SL
1-7
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