-4-
1. DISPLAY ALIGNMENT .....................................................................................................5
A. D
ISPLAY
S
IZE
......................................................................................................................5
B. P
ICTURE
P
OSITION
..............................................................................................................5
C. L
INEARITY
..........................................................................................................................5
D. G
EOMETRY
D
ISTORTION
(
ALL PRESET MODES
)....................................................................5
E. A
LIGNMENT
P
ROCEDURE
.....................................................................................................5
F. W
HITE
B
ALANCE
A
DJUSTMENT
(9300°
AS MAJOR TEMPERATURE
) L
OW LIGHT ADJUST
........6
G. F
OCUS
A
DJUSTMENT
...........................................................................................................6
H. C
ONVERGENCE
A
DJUSTMENT
.............................................................................................6
I. P
RESETTING
M
ODES
A
DJUSTMENT
.......................................................................................6
J. P
OWER
A
DJUSTMENT
...........................................................................................................7
2. CONTROLS AND CONNECTORS LAYOUT ...............................................................10
A. M
AIN
PCB .......................................................................................................................10
B. CRT/B .............................................................................................................................. 11
C. P
IN
A
SSIGNMENT
.............................................................................................................. 11
3. CIRCUIT DESCRIPTION ................................................................................................12
A. P
OWER
S
UPPLY
.................................................................................................................12
B. P
OWER
S
UPPLY
B
LOCK
D
IAGRAM
.....................................................................................12
C. P
OWER
S
UPPLY
C
IRCUIT
...................................................................................................13
D. TDA4855/4858 AUTOSYSNC DEFLECTION CONTROLLER ..................................14
F
IGURE
(4) (5) .......................................................................................................................14
E. H
ORIZONTAL
P
ROCESSOR
..................................................................................................16
F. V
ERTICAL
P
RE
-A
MP
...........................................................................................................16
G. H
ORIZONTAL
D
RIVE
..........................................................................................................17
4. TROUBLESHOOTING .....................................................................................................18
A. M
ONITOR
C
HECK
F
LOW
C
HART
........................................................................................19
APPENDIX A: SCHEMATIC DIAGRAMS & PCB ASSEMBLIES ...................................22
APPENDIX B: PARTS LIST.................................................................................................30
APPENDIX C: DISPLAY UNIT ASSEMBLY.....................................................................50
APPENDIX D: CRT & YOKE ASSEMBLY........................................................................53
Summary of Contents for CM721FET
Page 10: ... 9 ...
Page 11: ... 10 2 CONTROLS AND CONNECTORS LAYOUT A Main PCB ...
Page 20: ... 19 A Monitor Check Flow Chart A 1 No raster ...
Page 21: ... 20 A 2 No Picture ...
Page 22: ... 21 A 3 No vertical deflection raster become a horizontal line ...
Page 23: ... 22 APPENDIX A SCHEMATIC DIAGRAMS PCB ASSEMBLIES ...
Page 28: ......
Page 29: ......
Page 30: ......
Page 31: ...THE UPDATED PARTS LIST FOR THIS MODEL IS AVAILABLE ON ESTA ...
Page 32: ... 50 APPENDIX C DISPLAY UNIT ASSEMBLY ...
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