Barco BarcoReality 909 Owner's manual

Barco
Brand
Barco
Model
BarcoReality 909
Type
Owner's manual
Barco service bulletin
Serial Number: InfoT 589
Date: 19/11/2004
Product: BarcoReality 909
Priority code*: B
A.
”Must” modification, Barco will provide t he necessary components to per form this mo difica tion
at no charge.
B.
Improves the reliability of the product.
C.
Improves the general working conditions of the product.
D.
For information only.
1. BLUE CONVERGENCE (R7631375) FAILURES
Overview
•Problem
•Solution
• Replacingthebaseresistors
•Soldertips
1.1 Problem
Oscillations
Oscillations on the end stage of the blue convergence may occur, resulting in an unstable
image. These oscillations may cause failures on the peripheral components. Burn out of
the Source resistors a nd other capacitors have been reporte d .
1.2 Solution
Base resistors
An increase of the Gate resistor value in the blue convergence end stage solves the problem.
1.3 Replacing the base resistors
When ?
The adaptation has to be done in case of a module with index 2 or lower.
Convergence modules with index 3 or higher are already adapted.
Which resistors have to be replaced ?
• R76, R77, R84, R85,R176,R177,R184,R185
These 10 Ω resistor
s h ave to be replaced by 100 Ω resistors
The resistors to be replaced are located on the bottom of the module.
Barco nv Simulation Products
Noordlaan 5,
B-8520 Kuurne
www.barco.com
Page 1 of 5
Barco service bulletin
Image 1-1
Bottom PCB and loca tion of the resistors to be replaced
R14
R15
R16
R17
Z3
Z4
Z5
Z6
C1
C2
C3
C5
C7
R1
R2
R3
R4
R5
R6
R7 R8
R9 R11
R12
R13
Z2
Q134 Q4 Q34 Q104Q164 Q64
R200
R201
R202
R204
R205
R206
R207
R209
R210
R211
R212
R213
R214
R215
Z201
Q201
Q202
Q203
Q200
D200
D202
D201
C101
C102
C103
C105
C107
R101
R102
R103
R108
R104
R105
R106
R107
R109 R111
R112
R113
R114
R115
R116
R117
Z102
Z103
Z104
Z105
Z106
C131
C132
C133
C135
C137
R131
R132
R133
R134
R135
R136
R137R138
R139 R141
R142
R143
R144
R145
R146
R147
Z132
Z133
Z134
Z135
Z136
C31
C32
C33
C35
C37
R31
R32
R33
R34
R35
R36
R37 R38
R39 R41
R42
R43
R44
R45
R46
R47
Z32
Z33
Z34
Z35
Z36
C61
C62
C63
C65
C67
Z66
Z65
Z64
Z63
R61
R62
R63
R64
R65
R66
R67 R68
R69 R7 1
R72
R73
R74
R75
R76
R77
Z62
C161
C162
C163
C165
C167
R161
R162
R163
R164
R165
R166
R167R168
R169 R171
R172
R173
R174
R175
R176
R177
Z162
Z163
Z164
Z165
Z166
C204 C205
R91
R95
R92
R96
R90 R94
R93
R97
Q204
D203
C13
C14
C43
C44
C73
C74
C113
C114
C143
C144
C173
C174
R10 R40 R70 R110R140R170
I61 I161 I31 I131 I1 I101
C214
C213
R219
R217
C215
D205
Z202
Q205
R218
R220
D204
R123 R23
R153
R53
R183
R83
I91
C220
I90
R234
Q210
R232
R233
R241
Q212
R240
C221
R239
R238
Q211
C222
D206
R237
R235
R236
R230
R231
D128
D127
Z211
Z210
R84 R85 R184R185 R54 R55 R154R155 R25 R24 R125 R124
C16
C17
C46
C47
C76
C77
Q164 Q64
C61
C62
C63
C65
C67
Z66
Z65
Z64
Z63
R61
R62
R63
R64
R65
R66
R67 R68
R69 R71
R72
R73
R74
R75
R76
R77
Z62
C161
C162
C163
C165
C167
R161
R162
R163
R164
R165
R166
R167R168
R169 R171
R172
R173
R174
R175
R176
R177
Z162
Z163
Z164
Z165
Z166
R91
R95
C73
C74
C173
C174
R70 R170
I61 I161
R183
R83
I91
C220
R234
Q210
R232
R233
R84
R85 R184
R185
C76
C77
Image 1-2
Article number
P200387 : 100 Ω resistor
How to replace the b ase resistors ?
1. Remove the drawer
2.Removethe2screwsandremovetheprotectionplate(image1-3,image1-4)
Tip: Removegentlytheindicatedcablefromthecabletie
3. Remove the 2 screws and remove the h eatsink (image 1-5)
Note:The he atsink may be difficult to remove (superficial tension due to the cooling pasta
). Use a screwdrive r (use as lever) an d loosen it gently.
4. Remove the 2 connectors, image 1-5
5. Remove the screws fixing the convergence module.
Tip: Do not forget the screw indicated on the image (image 1-6)
InfoT:
InfoT 589
Page 2 of 5
Barco service bulletin
6.Removethemodule(image1-7)
7. Unsolder the 8 resistors located on the bottom of the module (see solder tips)
8. Solder the 8 resistors
Image 1-3
Image 1-4
Page 3 o
f5
InfoT: InfoT 589
Barco service bulletin
Image 1-5
Image 1-6
InfoT:
InfoT 589
Page 4 of 5
Barco service bulletin
Image 1-7
1.4 Solder tips
Proceed w it
h caution when soldering a SMD compon ent
• Insure tha
t the lead and solder pad area are free of any contamination b y cleaning with
a solvent approved for use.
• Insure that the Soldering Iron Tip is clean, in good co ndition a nd is fu lly inserted into
the h eater.
• Use the appropriate Tip and Temperature.
• Do not exert force on the land (pad) during the soldering operation. Damaged or lifted
pads may result.
• Maximize the TIP to solder jo int heat transfer by meltin g a small amount of solder on
the Tip before contact is made.
• If solder joint is not complete w ithin 5 seconds, the Tip should be removed from the
work to pre vent thermal damage.
• Surface Mount application however, may require a time period of up to 30 seconds
depending up
on Component, Land Pattern size and thermal characteristics of the PC
Assembly.
CAUTION: High Tip temperatures may cause damage to the component or
to the sold
ering pads.
Page 5 o
f5
InfoT: InfoT 589
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Barco BarcoReality 909 Owner's manual

Barco
Brand
Barco
Model
BarcoReality 909
Type
Owner's manual
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