23
CX-LMN5
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
Record/Playback/Erase Head
set
test tape
P-4-A100
(10 kHz, – 10 dB)
R-CH
oscilloscope
L-CH
R-CH
V
H
waveform of oscilloscope
in phase 45
°
90
°
135
°
180
°
good
wrong
MAIN board
SPEAKER terminal (J201)
L-CH
Record Bias Adjustment
Procedure:
1.
Record mode
2.
Mode: Playback
i-Bass OFF
BASS 0
TREBLE 0
3.
Confirm playback the signal recorded in step 1 become
adjustment level as follows.
4.
If these levels do not adjustment level, adjustment the SFR451
(L-CH) and SFR452 (R-CH) to repeat steps 1 and 4.
Adjustment level:
Playback output of 315 Hz to playback output
of 10 kHz: 0
±
1.0 dB (0
±
4.5mV).
Adjustment Location:
MAIN board
[MAIN BOARD]
– Component Side –
+
–
set
recorded
portion
MAIN board speaker terminal (J201)
level meter
attenuator
set
MAIN board
AUX IN (J602)
1) 315 Hz
2) 10 kHz
50 mV (–23.8 dB)
600
Ω
blank tape
CN-123
AF OSC
Tape Speed Check
Mode: Playback
1. Insert the WS-48B into the deck.
2. Press the
N
button on the deck.
3. Confirm that the frequency counter reads 3,000
±
90 Hz.
Sample value of Wow and Flutter:
0.3% or less W.RMS (JIS)
(WS-48B)
+
–
set
test tape
WS-48B
(3 kHz, 0 dB)
MAIN board
SPEAKER terminal (J201)
L-CH, R-CH
frequency counter
Note: Refer to “3-6. Cassette Panel” (see page 9)
adjustment screw
SFR452
Record Bias
Adjustment(R-CH)
SFR451
Record Bias
Adjustment(L-CH)
IC601
IC901
www.freeservicemanuals.info
9/6/15
Published in Heiloo, Holland.
