Sony KDL-50R550A Service Manual page 38

A BOARD SCHEMATIC DIAGRAM (26 OF 26)
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Item Date Revision Description
01 2012,12/03 PP 1. Change C4104 from 1500pF/50V to 2200pF/16V (1C-2B20222-K300).
A 02 2012,12/03 PP 1. Add C8037,C8038 0.1uF/25V (1C-2B30104-K002).
03 2012,12/03 PP 1. Change C4001 from 10uF/10V to 4.7uF/6.3V (1C-2B70475-K000).
04 2012,12/03 PP 1. Del R206 0R/0402.
05 2012,12/03 PP 1. Del R6040 0R/0402.
2. Change U6004/R6052/R6054/C6014 to NC.
06 2012,12/04 PP 1. Add C4106 0.01uF/50V (1C-2B20103-K601).
07 2012,12/06 PP 1. Add C287 0.1uF/25V (1C-2B30104-K002).
08 2012,12/06 PP 1. Change C8024 & C8030 from 560pF/50V to 470pF/50V (1C-2B20471-K000).
2. Change C8020 & C8032 from 10uF/10V to 2.2F/16V (1C-2B70225-K301).
B
09 2012,12/06 PP 1. Change C6004 & C6005 from 2.2uF/10V to 2.2F/16V (1C-2B70225-K301).
10 2012,12/12 PP 1. Add C8039 & C8040 39pF/50V (1C-2N20390-K000).
11 2012,12/23 PP 1. Change C225 from 1500pF/50V to 2200pF/16V (1C-2B20222-K300).
2. Change C219 from 0.1uF/16V to 0.022uF/25V (1C-2B20223-K400).
3. Change C220 from 680pF/50V to 1000pF/50V (1C-2B20102-K000).
12 2012,12/24 PP 1. Add R238 & R240 2.2K/0402 (1R-0000222-J200).
2. Add C223 & C287 0.01uF/50V (1C-2B20103-K601)
13 2012,12/24 PP 1. Change R227 from 10K to 4.7K (1R-0000472-J200).
C
14 2013,01/02 PP 1. Change C8026 & C8028 from 220pF to 0.022uF/25V (1C-2B20223-K400).
D
E
F
G
Monday, January 07, 2013 Monday, January 07, 2013 Monday, January 07, 2013
Date : Date : Date : 10-20-2005 10-20-2005 10-20-2005 LY.REV : LY.REV : LY.REV : 00 00 00
H
PWB : PWB : PWB : 297005040100.BRD 297005040100.BRD 297005040100.BRD File Name : File Name : File Name : 297005040100.DSN 297005040100.DSN 297005040100.DSN
DESCRIPTION : DESCRIPTION : DESCRIPTION :
SCHEMATIC OF LCD TV MONITOR SCHEMATIC OF LCD TV MONITOR SCHEMATIC OF LCD TV MONITOR
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Chassis RB1FK, BL
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Reason BL Page
1. Fine tune the U4006 Tss to 1mS (Min) for panel sequence. 50/60/70 24
1. For EMI 800Mhz issue and request by EMI team. 50/60/70 22
1. For EMI inrush current of U4005. 50/60/70 20
1. Un-use. 50/60/70 04
1. Those parts only for CHD hotel models. 50/60/70 08
1. For U4006 enable setting. 50/60/70 24
1. The change for enable cicuit of U203. 50/60/70 05
1. For POP noise issue of HP/line-out. 50/60/70 23
1. 50/60/70 08
共共共.
1. For distortion issue of HP. 50/60/70 23
1. PSU vender who modifed the OCP setting for 12V rail in MVT stage. 50/60/70 05
This change will effect the rise time of 12V rail. Base on this change that
need to fine tune the timing sequence for COMP & SS of DC/DC 1.2V.
1. Fine tune the enable voltage of AOZ1044PI. 50/60/70 05
1. Fine tune the Rb setting of Q203. 50/60/70 05
1. EMI request. 50/60/70 23
Drawn : Drawn : Drawn : Checked Checked Checked
10-20-2005 10-20-2005 10-20-2005
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5 6 7
Approved Approved Approved PART NO. PART NO. PART NO.
2970050401-SC 2970050401-SC 2970050401-SC
10-20-2005 10-20-2005 10-20-2005
5 6 7
8
A
B
C
D
E
F
G
REV. REV. REV. SHEET SHEET SHEET
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<RevCode> <RevCode> <RevCode>
26 26 26 26 26 26
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Chassis RB1FK, BL
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