Adjustment Point - Yamaha CT-7000 Service Manual

CT-7000

ADJUSTMENT POINT

2. PRECAUTIONS AND STEPS IN CORRECTING FAULTS
1. Replacing Parts
W
1-1. h
en it is necessary to replace any parts in the
RF or IC,
pack, an
discriminator
the circuit board, change the whole unit,
the
not individual part.
When adjustable
1-2.
1-1
in above are replaced, such adjustable parts (vari-
2. Unit Replacement
U�JIT
NAME
RF
Pack
IF
Circuit Board
Discriminator Circui
MPX
Circuit Board
Control Circuit Board
Power
Circuit Board
Tuning Meter
20
or
transistor discriminator coil in
than those
parts other mentioned
ADJUSTMENT ITEM
Overall adjustment (only when indl-
cater set point is out of adjustment)
Overall adjustment
t
Overall adjustment
Board
VCO Adjust:
1.
2.
Separation Adjust (Normal)
3.
Output Level Adjust
4.
Separation Adjust (Wide)
Separation Adjust (Wide)
1.
2.
Signal Meter Adjust
VCO Adjust:
Correct off-center read
switch off.
able
resistors.
adjustable trimmers and inductors) must
be readjusted as explained in part
1-3.
When non-adjustable parts
1-1
tioned in and
ment is necessary.
with parts meeting required specifications whenever
such specifications are
REQUIRED MEASUREMENT !NSTRU
Ultra-low distortion FM s1gnal generator
Standard signal generator
Distortion meter
Osc
Electronic Voltmeter
19kHz
Ultra-low distortion FM signal generator
Standard signal generator
Osci II
Electronic Voltmeter
F requency Counter
Ultra-low distortion FM
Standard signal generator
Oscilloscope
Electron
19kHz
Frequency counter
i
ng with power Unnecessary
2 below.
other those
than
1-2
above are replaced, no adjust­
Be
to
sure, however, replace only
I
is ted.
i l
loscope
oscope
i l
s gna generator
i V m
c olt e er
t
men­
MENT