KENWOOD KDC126
Instrukcja Serwisowa

KDC-105,126/126S
ADJUSTMENT
1. IC10 (TDA7513T) -The Tuner adjustment method
� When IC10 and its circumference are fixed, 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".

1-3. Adjustment of FM_ANT&RF Coil
Voltage Check Point : S-METER-Check Land (PWB Side B, around W572) Adjustment Coil : ANT Coil = L505 RF Coil = L506 Setting of Signal Generator : Refer to the following tables.
TYPE E/M K J MODE FM FM FM freq. 87.5MHz 87.9MHz 76.0MHz Mod. OFF OFF OFF ANT Input 5 or 11dBuEMF 5 or 11dBuEMF 5 or 11dBuEMF Fig (A),(C) (A),(C) (A),(C)

1-1. VCO Coil Adjustment - Adjustment of Tunning Voltage
: 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 E/M K J Mode AM AM FM freq. 1611kHz 1700kHz 90.0MHz Voltage 5.5 ± 0.1(V) 5.8 ± 0.1(V) 5.6 ± 0.1(V) Fig (C) (C) (C)

Voltage Check Point

qThe appearance and the coil with which S-METER DC voltage serves as the maximum are turned and adjusted in the above-mentioned SG input. wBy the above-mentioned adjustment method, same adjustment is performed to both sides (ANT & RF Coil).

M : AM Adjustment For Your Information : The frequency of SET is only set up by Pre-Set-Key in case this adjustment

1-4. Adjustment of STEREO (adjustment of 456k-VCO)
Adjust in TEST MODE � How to enter the test mode While pressing on [FM] and [PRESET 6] keys, reset the unit. � Adjustment method Complete on condition that show �ALL OFF� when pressing on [PRESET 1] and [PRESET 6] keys. (Writing adjustment valve to the EEPROM.) Effect of adjustment is in cofirmation of adjustment status at [PRESET 4] key. � Display of [PRESET 4] Adjustment �OK� : 14seg model �E2P OK� 7seg model �EPO� Adjustment �NG� : 14seg model �E2P ERR� 7seg model �EPE� � Releasing the test mode Reset mode only. ACC off, Power off, Power down and Remove the panel mode is not releasing.

1-2. Adjustment of 1st & 2nd-MIX Coil
Voltage Check Point : S-METER-Check Land (PWB Side B, around W572) Adjustment Coil : 1st IFT = L508 / 2nd IFT = L509 Setting of Signal Generator : Refer to the following tables
TYPE K E,M,J MODE AM AM freq. 1000kHz 999kHz Mod. OFF OFF ANT Input 35dBuEMF 35dBuEMF Fig (B),(C) (B),(C)

q The appearance and the coil with which S-METER DC voltage serves as the maximum are turned and adjusted in the above-mentioned SG input. w By the above-mentioned adjustment method, same adjustment is performed to both sides (1st & 2nd MIX Coil).

(REAR VIEW)

(TUNER ANT)

[Fig.1]

FM-SG AM-SG

(A) (B)

L505 L506 L507 L508

(C) DC Voltmeter Vt Check Land IC10

L509

S-METER Check Land (OVER VIEW) (UNDER VIEW)

10

[Fig.2]

[Fig.3]