SECTION 4
ADJUSTMENTS
4-1. MECHANICAL ADJUSTMENTS4-2. ELECTRICAL ADJUSTMENTS
PRECAUTION TAPE RECORDER SECTION
1. Clean the following parts wit2h a denatured-alcohol-moistenedFUNCTION switch: TAPE (RADIO OFF)
swab :SLOW PLAYBACK switch: OFF
record/playback headpinch rollerEASY LISTENING ADJUSTMENT switch : OFF
erase headrubber beltsVOLUME: MIN
capstan
2. Demagnetize the record/playback head with a head demagne-Standard Output Level
tizer. (Do not bring the head demagnetizer close to the erase
Output terminalEarphoneSpeaker
head.)
load impedanceW 323.2W
3. Do not use a magnetized screwdriver for the adjustments.
output signal level0.25V (�10dB)0.775V (0dB)
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power sup-Test Tape
ply voltage unless otherwise noted.TypeSignalUsed for
WS-48A3kHz, 0dBTape Speed Adjustment
Torque Measurement
TorqueTorque MeterMeter Reading 0dB=0.775V
20 � 55 gYcm
ForwardCQ-102C
(0.28 � 0.76 ozYinch)Record/Playback Head Azimuth Adjustment
Forward2 � 5 gYcmProcedure :
CQ-102C
Back Tension(0.028 � 0.069 ozYinch)1. Playback Mode
more than 50 gYcmtest tape
Fast ForwardCQ-201B
(more than 0.7 ozYinch)P-4-A100level meter
(10kHz, -10dB)
more than 50 gYcm32W
RewindCQ-201B
(more than 0.7 ozYinch)
set
Tape Tension Measurement
Torque MeterMeter Reading
J101 (Earphone jack)
more than 70g
CQ-403A
(more than 2.47 oz)
2. Rotate the screw to adjust level meter reading to the maximum.
Note :Adjust to the maximum peak though there may be two or
three peakes
3. After the adjustment, lock the adjustment screws with suitable
locking compound.
Adjustment Location :
adjustment screw
� 8 � |
ACEC
