Equipment Required; Adjustment Procedure - Sanyo JJ-P4 Service Manual

ADJUSTMENT PROCEDURES
GENERAL REMARKS , |
@ Before adjusting the mechanism of this unit, wipe the tape
@
This model features the Auto Reverse Mechanism. Then the
contacting surfaces clean as well as the contacting surfaces tape transport direction is distinguished as follows:
of the driving parts with a cotton swab or a soft cloth soaked = FORWARD DIRECTION:
in alcohol. Trouble may occur because of oil and grease The tape is wound counter-clockwise.
stains. = REVERSE DIRECTION: |
The tape is wound clockwise.
@ Handie the belt carefully the because grease easily attaches _ z se |
to it. Then check the used rubber parts. If the rubber has @ When performing the adjustment while sieve pack the test
deteriorated or is scratched, replace the parts with new one. tape, set the tape transport to the FORWARD DIRECTION.
EQUIPMENT REQUIRED | |
@ FrequencyCounter | , 7 -_ @ Alignment Tool
@ Dualtrace Oscilloscope , | - NOTE:
e VTVM (2 sets) O O Before the Adjustments, set the control and switch as follows:
@ Dummy Load (160) -
| |
=. m . Dolby NR Switch ................... a u l a ascadaswastenacedaet OFF
@ TestTapes |
|
= VolumeControl ...... eh Ee nee Poe ae ..... AS desired
° 3kHz test tape (Example: TEAC MTT- 111)
= Supply the regulated DC 1 BV power to the Ext. Power Jack
es 10kHz test tape (Example: A: BEX TCC-1 53) for the adjustment.
=» ADJUSTMENT PROCEDURE
Adjustment Dummy | _ Measuring _ Measuring
Reverse Side