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FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
86.5MHz
[87.0MHz] ((87.35MHz )) <64.0MHz>
CT2
109.5MHz
[108.3MHz] ((108.25MHz)) <109.5MHz>
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
86.5MHz
[87.0MHz] ((87.35MHz )) <64.0MHz>
CT1
109.5MHz
[108.3MHz] ((108.25MHz)) <109.5MHz>
Adjustment Location : Tuner board (page 13)
VCO Adjustment
Procedure :
FM RF signal
generator
generator
set
0.01 F
Carrier frequency : 98MHz
Modulation : no modulation
Output level : 1.38mV (–55dB)
Modulation : no modulation
Output level : 1.38mV (–55dB)
µ
telescopic
antenna
terminal
antenna
terminal
1. Connect the frequency counter to 4 and 7 pins of IC1 as shown
the figure below.
2. Turn the set to 98MHz.
3. Adjust RV1 for 76 kHz
3. Adjust RV1 for 76 kHz
±
500 Hz reading on frequency counter.
frequency counter
1
F
33k
Ω
µ
[ TUNER BOARD ]
+
Adjustment Location : Tuner board (page 13)
CD SECTION
Note on Adjustment
1. Perform adjustment in test mode.
After adjustment, be sure to release test mode.
2. Perform adjustments in the order given.
3. Use the disc (YEDS-18. Part No. 3-702-101-01) only when so
3. Use the disc (YEDS-18. Part No. 3-702-101-01) only when so
indicated.
Before adjustment
Put the set into test mode and perform the following checks.
Repair if there are any problems.
Repair if there are any problems.
r
Sled Motor Check
1. Press ^ button, then press OFF button.
2. Press +, =buttons and confirm that the Optical pick-up
2. Press +, =buttons and confirm that the Optical pick-up
moves smoothly from the innermost to outermost circumference
and back smoothly and with no catching or abnormal noises. (Can-
cellation of BTL mute)
and back smoothly and with no catching or abnormal noises. (Can-
cellation of BTL mute)
+ : Optical pick-up moves to the outer circumference
= : Optical pick-up moves to the inner circumference
= : Optical pick-up moves to the inner circumference
r
Focus Search Check
1. Press ^ button. (Focus search operation is performed continu-
ously.)
2. Look at the Optical pick-up objective lens and confirm that it moves
up and down smoothly, with no catching or abnormal noises.
3. Press
π
button.
Confirm that focus search operation stops. If it does not , press
π
button again longer.
Note
: When the malfunction is occurred by mis-passing
other buttons, turn off the power and check again
from making the test mode.
from making the test mode.
How to put the Set into Test Mode
1. Short-circuit following portion (IC801 @¢ pin) on the MAIN board.
2. Turn the POWER ON.
2. Turn the POWER ON.
TEST MODE
terminal
terminal
[ MAIN BOARD ]
How to release Test Mode
1. Turn the POWER OFF.
2. Open the short-circuit to release test mode.
2. Open the short-circuit to release test mode.
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