Akai HX-A2

V. MECHANICAL ADJUSTMENT
5-1 PINCH ROLLER PRESSURE
MEASUREMENT (Refer to Fig. 5-1)
200 to 400grm
SPRING GAUGE
PINCH ROLLER
SPRING
PINCH ROLLER
Fig. 5-1
Put in PLAY mode. Push pinch roller arm down with the
spring gauge, push the pinch roller 1 to 2 mm from the
Capstan and release slowly. Read the spring gauge at
the moment the pinch roller touches the capstan and
begins to rotate. Specified contact pressure measurement
of 200 to 400 grm. If there is no measurement obtained,
Adjust or Replace the pinch roller spring.
5-2. WINDING TORQUE MEASUREMENT
IN EACH MODE (Refer to Fig. 5-2)
CASSETTE TORQUE METER
Fig. 5-2
Insert a cassette torque meter (AJ-751179) and measure
in each mode. For Fast Foward and Rewind, measure
at the end of the tape when the tape has stopped run-
ning.
PLAY mode
Take up Torque: 35 to 75 grm-cm
Back tension torque: 1 to 6 grm-cm
FAST FORWARD, REWIND mode
Take up Torque: 70 to 160 grm-cm
rns
SERVICE
MANUAL
HX-A2
8
5-3 TAPE SPEED ADJUSTMENT
(Refer to Fig. 5-3)
TAPESPEED ADJ
VOLUME
CAPSTAN MOTOR
Fig. 5-3
Connect a frequency Counter to Line output terminals.
Play Back a 1,000Hz Tape Speed Test Tape(AT-750774)
or 3,150Hz Tape Speed Test Tape (AT-750774) and
adjust a Tape Speed Adjustment Volume (see Fig. 3-3)
to obtain a tape speed of 1,000Hz + 10Hz, or 3,150 +
30Hz.
5-4 REC/RB HEAD AZIMUTH
ADJUSTMENT (Refer to Fig. 5-4)
ERASE HEAD PB/REC HEAD
AZIMUTH
ALIGNMENT
SCREW
Fig. 5-4
Play Back a 10kHz Azimuth Alignment Tape (AT-
750778) and Adjust the Azimuth Alignment Screw,
until the output levels of both channels are maximum.
After Adjustment, Paintlock the Azimuth Alignment
Screw.