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A MAIN C.B
4
VOLUME
VR101
6
PHONES
7
J101
PVC1
TC203
4
TC204
TC202
L202
L205
2
TC201
3
5
5
1
L201
BAR ANT
<TUNER SECTION>
1. AM IF Adjustment
L205........................................... 450kHz
2. AM Frequency Range Adjustment
L204................................ 517kHz±5kHz
TC204.......................... 1750kHz±10kHz
3. AM Tracking Adjustment
L201........................................... 600kHz
TC201...................................... 1400kHz
4. FM Frequency Range Adjustment
L203......................... 87MHz±0.1MHz
TC203.................... 109MHz±0.1MHz
5. FM Tracking Adjustment
L202........................................ 88.0MHz
TC202 ................................... 108.0MHz
<TAPE PLAYER SECTION>
6. Tape Speed Adjustment
Settings :
• Test tape :
TTA–100 (Tape center)
• Test point :
PHONES (J101)
• Adjustment location : SFR101
• MSP :
CLASSIC
• TAPE SELECTOR : NORM
• VOLUME :
MAX
Method : Play back (FWD) the test tape and adjust
SFR101 so that the frequency becomes
3010Hz±10Hz. Then confirm WOW is less
than 0.50%.
7
L204
SFR 101
2
6
7
3
7. GOVERNER Adjustment
Perform the STOP —> PLAY and REVERSE operations
(or PAUSE ON —> OFF) after the motor is replaced.
When the tape starts running smooth, this adjustment
is not necessary. If wow is conspicuous at the beginning
of the tape-run, perform this adjustment following the
procedures below.
1) Solder resistor pattern (A) of the MOTOR AND
GOVERNOR MATCHING ADJ. resistor group.
2) Set the tape speed (using speed adjustment SFR101).
3) Restrict the motor rotation by hand (or turn PAUSE ON).
4) Remove your hand and listen to the beginning of the
tape-run.
5) When the rise of tape running is smooth, no more
adjustment is necessary.
If wow continues for 1 to 2 seconds at the rise time,
change the combined resistance according to procedure
6 and check that the tape starts running smooth.
6) Solder the resistor pattern according to the table below
Low
Medium
High
resistance
resistance
Pattern
resistance
(A)
(B)
(C)
(Procedure
Open
Solder
Solder
1 above)
Step (1)
Solder
Solder
Open
Step (2)
Solder
Solder
Solder
(NOTE :
=1.2ohm ,
=1.5ohm ,
=8.2ohm)
A
B
C
Finally re-check the tape speed.
7)
Caution : Cool the patterns down to normal tempera-
ture after soldering. If the pattern remains
heated, the gorvernor circuit does not operate
normally.
<TUNER SECTION>
Sensitivity :
(IHF, THD 3%)
F M Less than 17dB [at 88.0MHz]
Less than 17dB [at 98.0MHz]
Less than 17dB [at 108.0MHz]
(S/N 10dB)
A M Less than 57dB [at 600kHz]
Less than 56dB [at 1000kHz]
Less than 56dB [at 1440kHz]
S/N Ratio :
F M More than 53dB [at 88.0MHz]
More than 53dB [at 98.0MHz]
More than 53dB [at 108.0MHz]
A M More than 25dB [at 600kHz]
More than 27dB [at 1000kHz]
More than 27dB [at 1440kHz]
Intermediate frequency : F M 10.7MHz ± 0.1MHz
A M 455kHz ± 3kHz
FM stereo separation :
More than 17dB [at 98.0MHz]
<TAPE SECTION>
Tape speed :
3015Hz ± 60Hz
Wow & flutter :
Less than 0.5% (RMS)
Take-up torque :
24 ~ 45g-cm (FWD)
F.F torque :
70 ~ 150g-cm
Rew torque :
70 ~ 150g-cm
Back tension :
1.5 ~ 4.0g-cm (FWD)
S/N ratio :
More than 40dB
Distortion :
Less than 3.0%
Noise level :
Less than 5.0mV
(Vol MAX, without tape)
Less than 0.3mV
(Vol MIN, without tape)
Frequency response :
63Hz + 0.5/– 7.5dB ~ 8kHz + 4/–
4dB
(NORM)
63Hz + 2/– 6dB ~ 10kHz + 4/– 5dB
(METAL)
Test tape :
TTA– 100
TTA– 210
TTA– 310 (METAL)
TTA– 320 (NORM)
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