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SECTION
2
DISASSEMBLY
Note:
Follow the disassembly procedure in the numerical order given.
FRONT
CABINET
ASSEMBLY
jonaie
HANDLE
ASSEMBLY
TUNING
KNOB
@ Remove the
two hooks,
handle
TEX
hook
Tew
screwdriver NS
aN 2
ROR Se
DB
BE co)
'
dial pointer
DIAL
POINTER
SETTING
Orturn the tuning shaft fully counterclockwise.
Oset the left side of the dial pointer to the scratched
life on the tuning chassis.
(Arrow
scratched
line
ao:
= "@
tuning
chassis
@ +BVTP3 x 20
@ +BVTPS x 20 (5 pes.)
@ side panel (right
@ +RKTP3 x8
two portions:
There is the same part
on the opposite side.
@ tuning chassis
)
@ +BVTP3 x 12
assembly
tuning shaft
jae
Meat
a
SECTION
3
MECHANICAL ADJUSTMENTS
PRECAUTION
Clean
the
following
parts
with
a
denatured-alcohol-
moistened
swab:
record/playback
head
pinch
roller
erase
head
rubber
belts
capstan
idlers
Demagnetize
the
record/playback
head
with
a
head
demagnetizer.
(Do not bring the head
demagnetizer
close
to the
erase
head.)
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.
Power
supply
voltage: 9V
dc.
Torque Measurement
Torque meter
Meter reading
30 —75 g-cm
0.42 — 1.04
oz-inch
CQ-102C
(
0z-inch)
FWD
2-6 g-cm
back tension
(0.03 — 0.08 oz-inch)
30 ~— 75 g-cm
(0.42 — 1.04 oz-inch)
CQ-102RB
-
REV
2-6 g-cm
back tension
(0.03 — 0.08 oz:inch)
60 —130g-cm
C08
(0.83 — 1.81 oz-inch)
Tape Tension Measurement
Tension meter
Meter reading
CQ403A
more than 90 g
CQ-403R
(more than 3.18 02)
Head Height Adjustment
1. Install
a mirror cassette.
(CQ-009C: Part No. 8-909-708-01)
2.
In record
mode and viewing
from
the
front,
ad-
just the head height
to eliminate
tape curl
and
tape
twist at portions
of arrow.
3.
Perform
this adjustment
in both
FWD
and
REV
modes.
erase head
record/playback
head
Low
z= |2
3-573~-138-01
(t=0. 1)
a
3-573-138-11.
(t=0. 2)
Shim,
head height
adjustment
C
AN
{
SECTION
4
ELECTRICAL ADJUSTMENTS
3-1.
TAPE
RECODER
SECTION
eTest
Tape
ee
WS.-48A
3kHz,
0dB
tape
speed
adjustment
P-4-A063
6.3kHz,
—30dB
head
azimuth
adjustment
REC/PB
Head
Azimuth
Adjustment
Perform adjustment
in both FWD and REV modes.
After
adjustment,
confirm
the specification
in FWD mode.
Procedure:
1.
Mode: playback
test
tape
P-4-A063
(6.3kHz, —10dB)
320
Headphones
jack
2.
Turn
the
adjustment
screw
for
the
maximum
output
levels.
If these levels do not match.
turn the adjustment
screw
until
both
of output
levels
match
together
within
3dB,
Fe
within
Output
308
level
R-CH
screw
peak
position
L-CH
R-CH
angle
peak
peak
3.
Phase
Check
Mode:
playback
test
tape
P.4-A063
oscilloscope
(6.3kHz, — 10d)
320
in phase
- 45°
REV
FWD
a
OM
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