JVC AV-20RM4SE, AV-21RM4SE, AV-21RM4SN, AV-21RM4SP Service Manual

SERVICE MANUAL

COLOUR TELEVISION

YA080B20053

AV-20RM4SE, AV-21RM4SE,
AV-21RM4SN, AV-21RM4SP

Supplementary

The following items for the AV-20RM4SE, AV-21RM4SE, AV-21RM4SN and AV-21RM4SP were changed
partly.
Therefore, this service manual describes only the items which differ from those of the AV-20RM4SE, AV­21RM4SE, AV-21RM4SN and AV-21RM4SP service manual.
For details other than those described in this manual, please refer to the AV-20RM4SE, AV-21RM4SE, AV­21RM4SN and AV-21RM4SP service manual (No.52056, 2005/2).

DIFFERENCE LIST

PRINTED WIRING BOARD PARTS LIST

MAIN P.W. BOARD ASS'Y

Ref. No.

TU201 VE-30009637 VE-30033888 TUNER Non compatible

BEFORE AFTER

Part No.

COPYRIGHT © 2005 Victor Company of Japan, Limited

PART NAME DESCRIPTION

No.YA080B

2005/3

SECTION 1

PRECAUTION

Please refer to "AV-20RM4SE, AV-21RM4SE, AV-21RM4SN and AV-21RM4SP (No.YA080)" about this section.

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

Please refer to "AV-20RM4SE, AV-21RM4SE, AV-21RM4SN and AV-21RM4SP (No.YA080)" about this section.

SECTION 3

DISASSEMBLY

Please refer to "AV-20RM4SE, AV-21RM4SE, AV-21RM4SN and AV-21RM4SP (No.YA080)" 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 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

F1H 0000100100001011

F1L 1001001001010010

F2H 0001101100011101

F2L 1000001000000010

BS1 0000001100000001

BS2 0000011000000010

BS3 1000010100001000

CB 1000111010001110

BEFORE AFTER

1-2 (No.YA080B)