Sony BVW-55 Maintenance Manual page 284

4-3. Full Erase Head Replacement
3. Full erase head replacement
c
The full erase head is equipped with the tape
cleaner which has a sharp edge.
Do not touch it with bare hands. Pay careful
attention when servicing.
(1) Put the two bosses of a new full erase head
into the longitudinal hole of the CTL/ FE
head assembly and install it with one screw.
At that time, tighten the screw while pushing
the head surface toward the projection.
[Tightening torque: 20 x 10
{2.0 kgf.cm}]
(2) Solder the two harnesses to the printed circuit
board of the full erase head.
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Be sure to solder the wires in the correct
positions.
4. CTL/FE head assembly installation
(1) Insert the positioning pin of the CTL/FE head
assembly into the reference hole on the
mechanical deck and install it with three
screws.
(2) Connect the harness of the CTL/FE head
assembly to connector CN401 on the SV-206
board.
5. CTL/FE head assembly cleaning
Clean the CTL head, full erase head, tape cleaner
and tape guide with cleaning cloth moistened
with cleaning fluid.
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After cleaning, be sure to wipe with dry cloth.
Adjustment after replacement
6. Tape running adjustment
(Refer to Section 5-4.)
4-12
Lead wire
(black)
_2 N.m
Positioning pin
Reference hole
Full erase head
Lead wire
(white)
Projection
Bosses
PWH1.4 x 3.5
SV-206 board
CTL/FE head assembly
Positioning pin
PS2 x 5
Lougitudinal hole
CTL head
CTL/FE head assembly
CN401
BVW-55 P2