JVC AVN29F45S
Service Manual

3.2

MEMORY IC REPLACEMENT

� This model uses the memory IC. � This memory IC stores data for proper operation of the video and drive circuits. � When replacing, be sure to use an IC containing this (initial value) data.

3.2.1 MEMORY IC REPLACEMENT PROCEDURE 1. Power off Switch off the power and disconnect the power cord from the wall outlet. 2. Replace the memory IC Be sure to use a memory IC written with the initial setting data. 3. Power on Connect the power cord to the wall outlet and switch on the power. 4. Receiving channel setting Refer to the OPERATING INSTRUCTIONS (USER'S GUIDE) and set the receive channels (Channels Preset) as described. 5. User settings Check the user setting items according to the "FACTORY SETTING ITEM" table. Where these do not agree, refer to the OPERATING INSTRUCTIONS (USER'S GUIDE) and set the items as described. 6. SERVICE MODE setting Verify what to set in the SERVICE MODE, and set whatever is necessary(Fig.1) . Refer to the SERVICE ADJUSTMENT for setting.

3.2.2 SERVICE MODE SETTING ITEMS
SERVICE MENU SERVICE MENU

1. V/C(S)
3. SOUND(A) 5. 3L Y/C(LYC) 7. LOW LIGHT 9. VCO 11. I2C BUS

2. DEF(D) 4. OTHERS(F)
8. HIGH LIGHT 12. SYSTEM(SYS)

SELECT BY OPERATE BY

EXIT BY EXIT

Fig.1 Setting items 1. V/C (Video setting) 2. DEF (Deflection setting) 3. SOUND(A) (Audio setting) 4. OTHERS [Do not adjust] (Factory setting) 5. 3L Y/C [Do not adjust] (Y/C Separate setting) 7. LOW LIGHT (White balance setting) 8. HIGH LIGHT (White balance setting) 9. VCO (VCO setting) 11. I2C BUS [Do not adjust] (I2C BUS setting) 12.SYSTEM (SYS) (System constant setting) Adjust Fixed Fixed Adjust Adjust Adjust Fixed Fixed A01~A08 F01~F18 LYC01~LYC12 --------SYS01~SYS25 Settings Adjust Adjust Item No. S01~S48 D01~D33

1-8 (No.YA058)