Sony WM-BF49 - Page 3

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© Put a adhesive tape on the volume for protection. Insert
a precision screwdriver (width: 1:4 mm) and lift the
shaded portion, so that the claw @ and @ come off.
CAUTION: Be sure not to touch the volume knob,
when inserting precision screwdriver.
[3] Flexible Board Removal
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© Press down the battery terminals in order to leave
Mounted PCB in the rear cabinet, and then remove the
DIAL POINTER Setting
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DIAL POINTER
| - SECTION 2 ,
MECHANICAL AND ELECTRICAL ADJUSTMENT.
MECHANICAL ADJUSTMENTS
PRECAUTION
, Clean the following parts with a denatured — alcohol —
3
ELECTRICAL ADJUSTMEN
CASSETTE SECTION
Playback Head Phase Che
moistened
swab
:
.
Note
:When
replacing
the
hear
playback
head
pinch
roller
phases.
capstan
idlers
rubber
belts
Procedure
:
: ; 1—2g -cm
Back T
. Demagnetize the playback head with a head demagne—
tizer, |
. Do not use a magnetized screwdriver for the adjustments,
. After the adjustments, apply suitable locking compound
to the parts adjusted.
. The adjustments should be performed with the rated
power supply voltage unless otherwise ‘noted,
Torque Nessurenient
ae eee
Tape Tension Measurement oo ag?
es
. CQ-403A more than 90g (1.260z) |
Phase Check
Mode : playback
test tape
P-4-A063
(6,3kHz, — 10dB)
SH
headphones jy
(earphones) _
Screen.
, in phase 45° gi
good