5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
Code
6
Rev Date
REV
Revision History
4
Mar 30, 2004
2.1
1. modify RC IN/OUT circuit, delete 2R16, change VCC5V to +5VDD
7
8
9
10
11
2. change R7 from 1K to 4.7K, R47 from 3.3K to 2K, R48 from 1K to 2K, add R53 15K, delete 2R9
3. connect -5V with +5VDD on SMPS for IR in/out will work in standby status.
4. change C60 C61 from 220UF/25V to 100UF/50V in mute circuit.
2.2
Aug 19, 2004
1. add R500 pull-up resistor to Pin118 of U401, avoid the unstable status when power on the unit.
2.3
Oct 11, 2004
1. change Q712 from 8050 to DTA114ECA to reduce the heat of Q711, remove R752.
Jan 6, 2005
2. change 3CB5 from 103 to 123, 3R6 3R9 from 1R to 0R, to increase AC power for VFD from 3V to 4V.
JBL
1297C-1
2.3
DVD280 REVISION HISTORY
A4
15
15
Wednesday, February 16, 2005
Title
Size
Document Number
Rev
Date:
Sheet
of
DVD280
52
Summary of Contents for DVD280
Page 19: ...DVD280 19 ...
Page 20: ...DVD280 20 ...
Page 21: ...DVD280 21 ...
Page 22: ...DVD280 22 ...
Page 36: ...BH7862FS Video Buffer SMD PT6311 VFD driver SMD DVD280 36 ...
