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XL-V163TN/V164BK
XL-V263TN/V264BK
Front Section
Is the pin32 of 1C201
+5V?
Is the pin19 of IC201
-32V?
Is the filament of FL201
biased as shown below?
NO
Check the connections
ov
between the power supply
circuit and the front PCB.
Ronn
_--28V
FL201
4V RMS
Is the relationship
between output terminal
YES
of IC202 and +5V line as
shown in the figure?
Does part of FL become
YES
NO
hack
fa
extremely bright and display
Check reset circuit.
abnormally?
NO
;
Does the following waveform
appear at PinS~24 of FL201?
NO
Is operation of the
he
Check IC 201, switches
buttons normal?
and wiring.
Defective IC201
YES
Loading section
Is the pin 1 of C602
+10V?
Is the pinS of IC602 ~10V?
Is the pin 4of 1C603 - 10V?
Is the pin8 of 1C603 +10V?
YES
Open the tray and close
it.
YES
NO
jlsthe voltage
;
apploximately ~ 6V at
ls operation normal?
pin 5 of J601 when
opening
and +6V when
closing
Ne.
Check the power
supply circuit.
Is the voltage - 6.6V
at pin 1 of IC603
YES
when opening and
Check IC602
+6.6V when closing?
YES
Are the voltages of each
12)
:
:
terminal right?
:
wn"
Check the loading
motor and the
connections with the
loading motor.
pin29 (1C201)
=0V
pin28 (IC201) = 5V
YES
Check the wiring
from the pin8,9 of
Check the wiring
around IC201 and
4601 to the pin 24,
35 of C201 and
the front PCB.
OPEN/CLOSE switch.
1-32 (No.20392)
I
Pe P PAR
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AAC gs A
PRE
Pr ED MEE
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SN Ee
OR PAR
ETE R
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ae OE SL MEN R, ARN AN OME: R
NEE A P E
SAE M I I M
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