User manual JVC AV-25BT6 Service Manual

[. . . ] SERVICE MANUAL COLOUR TELEVISION 7 2005 52056B AV-25BT6ENB, AV-25BT6ENS Supplementary The following items for the AV-25BT6ENB and AV-25BT6ENS were changed partly. [. . . ] 2002). DIFFERENCE LIST PRINTED WIRING BOARD PARTS LIST MAIN P. W. BEFORE VE-30009637 AFTER VE-30033888 PART NAME TUNER DESCRIPTION Non compatible COPYRIGHT © 2005 Victor Company of Japan, Limited No. 52056B 2005/7 SECTION 1 PRECAUTION Please refer to "AV-25BT6ENB and AV-25BT6ENS (No. 52056)" about this section. SECTION 2 SPECIFIC SERVICE INSTRUCTIONS Please refer to "AV-25BT6ENB and AV-25BT6ENS (No. 52056)" about this section. SECTION 3 DISASSEMBLY Please refer to "AV-25BT6ENB and AV-25BT6ENS (No. 52056)" about this section. SECTION 4 ADJUSTMENT 4. 1 SETTING VALUES OF OPTION ITEMS When a previous TUNER (VE-30009637) is replaced by a new TUNER (VE-30033888), it should be adjusted to the setting values in the table below. If the TUNER of the model with the new TUNER (VE-30033888) is replaced, there is no need for adjustment. 4. 1. 1 SETTING VALUE OF SETTING ITEM Make sure not to change the values that are not in the table below. If those values are changed, the unit will not operate normally. Setting value Item Bit 7 F1H F1L F2H F2L BS1 BS2 BS3 CB 0 1 0 1 0 0 1 1 Bit 6 0 0 0 0 0 0 0 0 Bit 5 0 0 0 0 0 0 0 0 BEFORE Bit 4 0 1 1 0 0 0 0 0 Bit 3 1 0 1 0 0 0 0 1 Bit 2 0 0 0 0 0 1 1 1 Bit 1 0 1 1 1 1 1 0 1 Bit 0 1 0 1 0 1 0 1 0 Bit 7 0 0 0 0 0 0 0 1 Bit 6 0 1 0 0 0 0 0 0 Bit 5 0 0 0 0 0 0 0 0 AFTER Bit 4 0 1 1 0 0 0 0 0 Bit 3 1 0 1 0 0 0 1 1 Bit 2 0 0 1 0 0 0 0 1 Bit 1 1 1 0 1 0 1 0 1 Bit 0 1 0 1 0 1 0 0 0 1-2 (No. 52056B) 4. 1. 2 HOW TO ENTER THE SERVICE MODE (1) Press the [INFORMATION] key and [MUTING] key simultaneously, and the SERVICE MENU screen will be displayed. [. . . ] Example: Initially an option with values: "00000000" Press "0" button: "00000001" Press "0" button again: "00000000" SERVICE MENU JVCAK30/37 B23 OSD IF1 IF2 IF3 IF4 AGC VLIN RGBH VSOF VPOF >03 080 004 069 004 031 042 031 007 -20 -05 AVL * 4. 1. 5 HOW TO STORE OF SETTING VALUE (1) The setting value will be stored auto matically when release the REMOTE CONTROL UNIT keys. REMOTE CONTROL UNIT key NAME Fig. 1 4. 1. 3 HOW TO SELECT THE SETTING ITEM While the SERVICE MENU screen is displayed, press the [ ]/[ ] key and select the setting item. (Fig. 2) MUTING key Bit 7 Bit 5 Bit 3 Bit 1 00000000 Bit 6 Bit 4 Bit 2 Bit 0 INFORMATION key MENU key FUNCTION [ ]/[ ] key JVCAK30/37 B23 NIP SCP2 SEC2 F1H F1L F2H F2L BS1 BS2 BS3 018 018 017 00001101 00010010 00010010 00010010 00010010 00010010 00010010 FUNCTION [ ]/[ ] key > 0 3 76543210 Fig. 2 SECTION 5 TROUBLESHOOTING Please refer to "AV-25BT6ENB and AV-25BT6ENS (No. 52056)" about this section. (No. 52056B)1-3 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No. 52056B) Printed in Japan VPT [. . . ]