8
WM-GX221
SECTION 4
MECHANICAL ADJUSTMENT
SECTION 5
ELECTRICAL ADJUSTMENT
PRECAUTION
1. Specified voltage: 2.5 V (DC)
2. Switch and control position
VOL : MAX
SPEAKER : OFF
AVLS : NORM
SOUND BOOST : OFF
PB EQ : NORM
PAUSE : OFF
ISS : 1
FM SENSE : DX
(US, 5E)
FM MODE : FM ST
(EXCEPT US, 5E)
2X REC TIME : NORM
• Abbreviation
5E : E model with the indication of the country of origin.
TAPE SECTION
Tape Speed Adjustment
Procedure:
1. Enter the FWD playback mode.
2. Adjust RV601 so that the value of the frequency counter reading
becomes 3,000 Hz.
Specification value:
Frequency counter
2,985 Hz – 3,015 Hz
3. Check that the frequency deviation at the beginning and ending
of a tape is within 1.5 % (45 Hz).
4. Set the 2x REC TIME switch to DOUBLE (2.4 cm/s).
5. Adjust RV602 so that the value of the frequency counter reading
becomes 1,500 Hz.
Adjustment Location : MAIN board (see page 9)
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab:
record/playback/erase head pinch roller
rubber belts capstan
2. Demagnetize the record/playback head with a head demagnet-
izer. (Do not bring a head demagnetizer close to the erase
head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
• Torque Measurement
Signal
3 kHz, 0 dB
Used for
Tape Speed Adjustment
Tape
WS-48A
Test tape
WS-48A
(3kHz, 0dB)
Set
2
jack (J301)
16
Ω
(EXCEPT US MODEL)
32
Ω
(US MODEL)
Frequency counte
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