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PN-2218I
ing repair,the legal responsibility shall be with the
repairing company.
3. Check for safety after repair.
Check that the screws,parts and wires are put back
securely in their original position after repair.Ensure
for safety reasons there is no possibility of secondary
ploblems around the repaired spots.
If extended damage is caused due to negligence of
repair,the legal responsibility shall be with the repair-
ing company.
4. Caution in removal and making wiring connection to
the parts for the automobile.
Disconnect the battery terminal after turning the igni-
tion key off.If wrong wiring connections are made with
the battery connected, a short circuit and/or fire may
occur.If extensive damage is caused due to negligence
of repair,the legal responsibility shall be with the re-
pairing company.
5. Cautions regarding chips.
Do not reuse removed chips even when no abnormal-
ity is observed in their appearance.Always replace
them with new ones.(The chip parts include
resistors,capacitors,diodes,transistors,etc).The nega-
tive pole of tantalum capacitors is highly susceptible
to heat,so use special care when replacing them and
check the operation afterwards.
6. Cautions in handling flexible PWB
Before working with a soldering iron,make sure that
the iron tip temperature is around 270
.Take care
not to apply the iron tip repeatedly(more than three
times)to the same patterns.Also take care not to apply
the tip with force.
7. Turn the unit OFF during disassembly and parts
ADJUSTMENTS
Clock
accuracy
FM noise
convergence
Item
Procedure
Measuring
instrument
1. Turn off and on the ACC switch,while holding CD-EJ button and Power
button.Repeat it four times slowly.
("CD ALL 1 RANDAM" appears on the display)
2. Set a universal timer to TP501(BEEP),adjust TC501 so that a reading of the
meter is 0
0.1sec./day.
1. Input a 98.1MHz/55dB
(1kHz 30
MOD) signal.
2. Set an output level of VOL to 0dB(=1.41V).
3. Adjust VR101 so that the output is
14
1dB when SG output is set
20dB
.
Universal timer
SSG
Milli volt meter
BLOCK DIAGRAM
replacement.Recheck all work before you apply power
to the unit.
8. Cautions in checking that the optical pickup lights up.
The laser is focused on the disc reflection surface
through the lens of the optical pickup. When checking
that the laser optical diode lights up,keep your eyes
more than 30cms away from the lens.Prolonged view-
ing of the laser within 30cms may damage your eye-
sight.
9. Cautions in handling the optical pickup
The laser diode of the optical pickup can be damaged
by electrostatic charge caused by your clothes and
body.Make sure to avoid electrostatic charges on your
clothes or body,or discharge static electricity before
handling the optical pickup.
9-1. Laser diode
The laser diode terminals are shorted for trans-
portation in order to prevent electrostatic
damage.After replacement,open the shorted
circuit.When removing the pickup from the
mechanism,short the terminals by soldering them
to prevent this damage.
9-2. Actuator
The actuator has a powerful magnetic circuit.If
a magnetic material is put close to it.its charac-
teristics will change.Ensure that no foreign sub-
stances enter through the ventilation slots in the
cover.
9-3. Cleaning the lens
Dust on the optical lens affects performance.To
clean the lens,apply a small amount of
isopropylalcohol to lens paper and wipe the
lens gently.
ANT
BL101
TUNER PACK
CD MECH
IC4
RF-AMP
IC5
DSP
IC3
D/A CONVERTER
DIGITAL FILTER
M M
IC2
SERVO DRIVER
DIN 8P(FOR CD)
SIG.INPUT
IC401
CD AMP
IC201
ELECTRONIC
VOLUME
LPF
IC501
RADIO/CD
CONTROL
KEY
MATRIX
IC901
VFD DRIVER
FL-TUBE
IC301
POWER
AMP
SIG.OUTPUT
OUTLET SOCKETL
TO SP
ANT SIG
B/U
ILL CONT
LIGHT SW
ACC
POWER
SUPPLY
