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Aiwa HS-F505 Service Manual page 8

Stereo cassette recorder

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WIRING — 2
RELAY FLEX
PabEMRIUS
EI SHERBIESI,
MAIN
c.B
C.B(2/2)
_
CONTROL C.B
ID] SP AMP C.B
$201
OFF <—>
ON
SPI
$40!
STOP/DIR
$405
PLAY/DIR
$406
$404
RECORD
$407
TIMER SET/COUNTER
LED401
$408
TIME/COUNTER
:
SEC
MIN
| SET
HOUR
11
To [A] MAIN C.B
™2
ADJUSTMENT — 1
A}; MAIN
C.B
©
SFR1
MOTOR
GOVERNOR
TP3
SFR1
peeenenec;
Cc
ewewmescend
eee
|
1.Clock Frequency
Check
Setting : * Test point : TP3
|
Method :* Connect
a resistor (1MQ)
to counter and
TP3. Check
the frequency at TP3 is 2650Hz +
250Hz.
2. Tape Speed Adjustment
Settings :* Test tape : TTA —100 (TTA — 111S)
«Test point : PHONES
JACK
« Adjustment
location: SFR1
of motor
governor
Method :* Play back the test tape, adjust for 3000Hz
at
FWD
and +45Hz
at REV.
3. Azimuth
Adjustment
Settings :* Test tape : TTS — 320 (TTA — 113B, TCC — 152)
¢ Test point: PHONES
JACK
«Adjustment location: Azimuth adjustment screw
Method :*Play back the test tape, and adjust so that the
output becomes maximum at FWD or REV mode.
CONTROL
C:B
4.Dolby Level Adjustment
Settings :* Test tape : TTS — 200 (TTA — 161, TCC — 1380)
}
*Test point : TP1 (Lch), TP2 (Rch)
¢ Adjustment
location : SFR1
(Lch), SFR2 (Rch)
*DOLBY
SW:
OFF
*DSL
SW:
OFF
Method :*Connect an electrolytic capacitor (10 u F/16V)
to measured equipment and TP1 (2), adjust
for 100mV + 10mV.
5. Motor
load Adjustment
Refer to the Motor
governor
section.
6. Control Clock Check
Setting: «Test point: TP4
|
Methed :* Connect
the frequency
counter
to TP4 and
check the frequency for 1024.007Hz + 0.01Hz.
12

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