AIWA D27U Repair Manual

2. Preparation for Adjustment (To set VCRNOTES)
(VCP) to the loading state without insertingAlways return the VCR (VCP) to the Front Loading
a cassette.)Mechanism Assembly State in the following order after
the above operations have been performed.
1) Unplug the Power Cord from the AC outlet.1) Press the Eject button after turning the power ON.
2) Separate the Top Cover and Front Loading2) Wait for about 10 seconds until searching out the
Mechanism.assembly position.
3) Plug the Power Cord into the AC outlet.3) Assemble the Front Loading Mechanism and connect
4) Turn the VCR on and push the tact switch in thethe Front Loading Mechanism Connector.
P.C.B. Assembly. The VCR can accept inputs for each4) Refer to the OFront Loading Mechanism Disassembly�
mode in this case. However the rewind and review
Section.
operation cannot be performed for more than a few
seconds because the take-up reel table is in the stop
state and reel pulses cannot be detected.
NOTE)
Cover the holes in the end sensors with black tape to
prevent a light leak.
3. Tension Post Position and Tension Adjustment
Purpose: To insure uniform tape contact with the video head by maintaining constant tape tension.
Test Equipment/FixtureTest Conditions VCR (VCP) StateAdjustment Point
Y Cassette Torque MeterY Position Adjustment : Play without aY Holder Band B and C
(For play 100g/cm)cassette
Y Tension Check : Play
Position AdjustmentTension Adjustment
1) Remove cassette.1) Turn on VCR and load the cassette torque meter.
2) Adjust the position of tension post in accordance with2) Press the play button and observe the torque tension on
figure C-3.the supply reel (spec. 37g/cm?5g/cm).
3) If torque is out of spec. then use a Phillips screw driver
NOTE)and move the screw head located in the center of the B
and C band hold; to either the right or left until correct
Align the Tension Post (2mm) to the hole in the Chassis
torque is indicated.(2.5mm).
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