Kenwood KDC-MP333V Service Manual page 13

1. IC10 (X34-) -The Tuner adjustment method
• When IC10 and its circumference are repaired, according
to the following order, it readjusts if needed.
• The adjustment item changes with parts to exchange. Please
refer to "Parts vs Adjustment item table".
1-1. VCO coil adjustment - adjustment of tunning voltage
Voltage Check Point : Vt-Check Land
(PWB Side B, around D506)
Adjustment Coil : L507 (VCO Coil)
The adjustment method : VCO coil is turned and adjusted
according to the following tables.
Type Mode freq.
E/M AM 1611kHz
K AM 1700kHz
J FM 90.0MHz
M : AM Adjustment
For Your Information : The frequency of this unit is only set
up by preset key in case this adjustment
1-2. Adjustment of 1st & 2nd-MIX coil
Voltage Check Point
Adjustment Coil
Setting of Signal Generator : Refer to the following tables
Type Mode freq.
K AM 1000kHz
E/M/J AM 999kHz
qThe appearance and the coil with which S-METER DC volt-
age serves as the maximum are turned and adjusted in the
above-mentioned SG input.
wBy the above-mentioned adjustment method, same adjust-
ment is performed to both sides (1st & 2nd MIX Coil).
( REAR VIEW )
[Fig.1]
L505
L506
L507
L508
L509
( OVER VIEW )
[Fig.2]
ADJUSTMENT
Voltage Fig.
5.5 ± 0.1(V)
2, 3 (C)
5.8 ± 0.1(V)
2, 3 (C)
5.6 ± 0.1(V)
2, 3 (C)
: S-METER-Check Land
(PWB Side B, around R216)
: 1st IFT=L508 / 2nd IFT=L509
Mod. ANT Input Fig.
OFF 35dBµEMF 1~3 (B),(C)
OFF 35dBµEMF 1~3 (B),(C)
( TUNER ANT )
( A )
FM-SG
( B )
AM-SG
KDC-MP333V/MP333VS
1-3. Adjustment of FM ANT & RF coil
Voltage Check Point
Adjustment Coil
Setting of Signal Generator : Refer to the following tables
Type Mode freq. Mod.
E/M FM 87.5MHz OFF 5dBµV or 11dBµEMF 1~3 (A),(C)
K FM 87.9MHz OFF 5dBµV or 11dBµEMF 1~3 (A),(C)
J FM 76.0MHz OFF 5dBµV or 11dBµEMF 1~3 (A),(C)
qThe appearance and the coil with which S-METER DC volt-
age serves as the maximum are turned and adjusted in the
above-mentioned SG input.
wBy the above-mentioned adjustment method, same adjust-
ment is performed to both sides (ANT & RF Coil).
1-4. Adjustment of STEREO (adjustment of 456k-VCO)
Adjust in TEST MODE
• How to enter the test mode
Refer to "TEST MODE".
• Adjustment method
While in test mode and all lights are lit (STANDBY), press
and hold [1] key and press [6] key for 3 seconds or longer.
(Adjusted data will be written on E2PROM.)
Effect of adjustment is in cofirmation of adjustment status
at Preset [AM] key.
• Display of Preset [AM]
Adjustment OK: "E2P OK" (14-segment display model)
Adjustment NG: "E2P ER" (14-segment display model)
• How to clear the test mode
Refer to "TEST MODE".
Vt
Check Land
S-METER
Check Land
( UNDER VIEW )
[Fig.3]
: S-METER-Check Land
(PWB Side B, around R216)
: ANT Coil = L505
RF Coil = L506
ANT Input Fig.
( C ) DC Voltmeter
IC10
13