SECTION 4
MECHANICAL ADJUSTMENT
? TAPE MECHANISM DECK SECTIONY Torque Measurement
PrecautionModeTorque meterMeter reading
1. Clean the following parts with a denatured alcohol-moistened31 to 71 g Y cm
swab:FWDCQ-102C
record/playback headspinch rollers(0.43 � 0.98 oz Y inch)
erase headrubber beltsFWD2 to 6 g Y cm
capstanidlersback tension(0.02 � 0.08 oz Y inch)CQ-102C
2. Demagnetize the record/playback head with a head
31 to 71 g Y cm
demagnetizer.(0.43 � 0.98 oz Y inch)REVCQ-102RC
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to theREV2 to 6 g Y cm
parts adjusted.back tension(0.02 � 0.08 oz Y inch)CQ-102RC
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.71 to 143 g Y cmFF/REWCQ-201B
(0.98 � 1.99 oz Y inch)
100 g or moreFWD tensionCQ-403A
(3.53 oz or more)
100 g or more
REV tensionCQ-403R
(3.53 oz or more)
? CD MECHANISM DECK SECTION
To adjust the mechanism section, enter the mechanism section adjustment mode.
For how to enter the mechanism section adjustment mode, refer to each adjustment section.
DISC SENSOR ALIGNMENT
1. Make sure that there is no disc in the unit.
2. Connect an oscilloscope to IC401$a, IC4024 of the MAIN board.
oscilloscope
IC401$a D.SENS (CH1)
IC4014 HHOUT (CH2)
GND
3. Turn the power switch on.
4. Press the p button, ENTER button and GROUP 5 button simultaneously.
N 18 N |
ACEC
