Sanyo DC-D9 - Tape Deck Adjustments; Head Replacement

TAPE DECK ADJUSTMENTS
Measuring Adjust Adjust
Adjustment Item
Test Tape Output connection
Note
Instrument location value
(a) HEAD AZIMUTH
VTT738 etc.
AC-voltmeter
SPEAKER TERMINAL
HEAD AZIMUTH
TAPE “8”
Max.
(l OkHz)
SCREW
---
(b) HEAD AZIMUTH
VTT738 etc.
AC-voltmeter
SPEAKER TERMINAL HEAD AZIMUTH
TAPE “A”
Max.
---
(lOkHz)
SCREW
(c) MOTOR SPEED
MTT-111 FREQUENCY
(NORMAL)
(3,000 Hz)
COUNTER
SPEAKER TERMINAL SVRO1
3,000 Hz
..-
a.
(a)
(1)
(2)
(3)
(4)
(b)
HEAD REPLACEMENT
AND AZIMUTH ADJUSTMENT
Head replacement
After replacement, demagnetize
the heads by using a degausser.
Be sure to clean the heads
before attempting to make any
adjustments.
Be sure both channels (1 and 2)
are the same level
(Using a dual-channel oscilloscope).
All wiring should be returned to
the original position after work
is completed.
.
Head azimuth
● TAPE “A”
TAPE “B”
-
E. HEAD
RIP
TAPE “A”
HEAD
PLAY HEAD
(1) Load a test tape (VTT-738, etc.: 10 kHz) for azimuth
adjustment.
(2) Press the PLAY button.
(3) Use a flat-tip ( - ) screwdriver to turn the screw for
azimuth adjustment so that the left and right outputs
are maximized at the same phase during playback.
(4) Press the STOP button.
● TAPE “B”
(1)
(2)
(3)
(4)
..
Load a test tape for azimuth adjustment.
Press the PLAY button.
Azimuth screw adjustment.
Press the STOP button.
● After making the adjustment, secure the azimuth
adjustment screw by applying screw lock (TB- 1401 B).
-13-
.
.:.-