CPD-E250 - Sony Monitor Service Manual (repair manual)

cpd-e250 service manual
Model
CPD-E250
Pages
47
Size
4.5 MB
Type
PDF
Document
Service Manual
Brand
Device
Monitor
File
cpd-e250.pdf
Date

Read Sony CPD-E250 Service Manual online

 SERVICE MANUAL
17VC 
CHASSIS 
Design and specifi cations are subject to change without notice.
TRINITRON
®
 COLOR MONITOR
AEP Model
Chassis No: SCC-L38MA
CPD-E250
9-978-888-01
Picture tube 
0.24 mm aperture grill pitch (center)
 
 
17 inches measured diagonally
  90-degree 
defl ection
Video image area 
(16.1" maximum viewing image)
 
 
Approx. 328 X 242 mm (w/h)
 
 
(13 x 9
5/8
  inches)
Resolution   
Horizontal: Max. 1600 dots
 
 
Vertical: Max. 1200 lines
Standard image area 
Approx. 312 x 234 mm (w/h)
  (12
3/8
 x 9
1/4
  inches)
Input signal
 
Video 
Analog RGB  (75 ohms typical)
 
 
0.7 Vp-p, ±5%, Positive
 Sync 
Separate 
HD/VD,
  TTL 
Polarity 
Free
  External 
Composite, 
  TTL 
Polarity 
Free 
 
 
Sync on Green
Power Consumption  
115 
W
Defl ection frequency 
  Horizontal: 30 to 85 kHz
 
 
  Vertical: 48 to 170 Hz
AC input voltage/current   100 to 120 V, 50 to 60Hz, 1.7A
 
 
Dimensions 
  402 x 418 x 421 mm (w/h/d)
    
(15
7/8
 x 16
1/2
 x 16
5/8
 inches)
Mass 
 
  Approx. 19 kg (41 lb 14 oz.)
SPECIFICATIONS
Self Diagnosis
Supported model
— 3 —
CPD-E250
SECTION TITLE 
PAGE
 Power 
Management.................................................................................................................................. 4
 
Self Diagnosis Function ............................................................................................................................ 4
 Timing 
SpeciÞ cation.................................................................................................................................. 4
 
Warnings and Cautions............................................................................................................................. 5
 Safety 
Check-Out 
.................................................................................................................................... 6
 
1. Disassembly
 
1-1. Cabinet Removal ............................................................................................................................... 7
 
1-2. Service Position................................................................................................................................. 7
 
1-3. A and D Board Removal .................................................................................................................... 8
 1-4. 
Picture 
Tube 
Removal ....................................................................................................................... 9
 
 
Anode Cap Removal ......................................................................................................................... 9
2. Safety Related Adjustments
 
2-1. HV Regulator Check........................................................................................................................ 10
 
2-2. HV Protector Circuit Check.............................................................................................................. 10
 
2-3. Beam Protector Check (Software Logic) ......................................................................................... 10
 2-4. 
B+ 
Voltage 
Check............................................................................................................................ 10
3. Adjustments
 
3-1. Landing Rough Adjustment ..............................................................................................................11
 
3-2. Landing Fine Adjustment ..................................................................................................................11
 
3-3. Convergence Rough Adjustment......................................................................................................11
 
3-4. Convergence and V. Key (H. TRP) Fine Adjustment ........................................................................11
 
3-5. Vertical and Horizontal Position and Size SpeciÞ cation .................................................................. 12
 3-6. 
Focus 
Adjustment ............................................................................................................................ 13
 
3-7. Digital Convergence Adjustment ..................................................................................................... 13
 
3-8. Convergence SpeciÞ cation.............................................................................................................. 13
4. Diagrams
 
4-1. Circuit Boards Location ................................................................................................................... 14
 
4-2. Printed Wiring Board and Schematic Diagram Information ............................................................. 14
 
4-3. Block Diagrams ............................................................................................................................... 15
  
Block 
Diagram.............................................................................................................................. 15
 
 
D Block Diagram ............................................................................................................................. 16
 
4-4. Schematics and Supporting Information.......................................................................................... 17
 
 
A Board - Schematic Diagram......................................................................................................... 17
 
 
D Board - Schematic Diagram ........................................................................................................ 19
 
 
H1 Board - Schematic Diagram ...................................................................................................... 21
 4-5. 
Semiconductors............................................................................................................................... 22
5. Exploded Views
 5-1. 
Picture 
Tube 
................................................................................................................................... 23
 5-2. 
Chassis............................................................................................................................................ 24
 
5-3. Packing Materials ............................................................................................................................ 25
6. Electrical Parts List   ....................................................................................................................................... 26
TABLE OF CONTENTS
— 4 —
CPD-E250
        Power consumption       Screen     Horizontal        Vertical             Power           Recovery time             Indicator
        mode                               (video)     sync signal    sync signal   consumption
1      Normal operation              active             yes                  yes                < 115W                      --                         Green
2      Active-off (3rd mode)          blank             no*                   no*                 < 3 W            Approx. 10 sec.              Amber
3      Power-off                               --                  --                     --             0 W (approx)                 --                            Off
*   In this mode, the signal will appear in one of three ways:  The Horizontal Sync Signal alone off, the Vertical Sync Signal 
    alone  off, or both signals off.    
POWER MANAGEMENT
The power saving mode complies with the VESA Display Power Management Signaling standard.  Each state of power management shall be 
activated by the host computer terminating the appropriate sync signals.  Blanking the video must precede termination of the sync signals.  The 
elapsed time counter shall also be controlled by the host computer.  Reactivation of the monitor shall be accomplished from the host computer by 
re-establishing the normal sync signal.
TIMING SPECIFICATION
SELF DIAGNOSIS FUNCTION
When a failure occurs, the STANDBY/TIMER lamp will fl ash a set number of times to indicate the possible cause of the problem.  If there is more 
than one error, the lamp will identify the fi rst of the problem areas.
Status
Area of Failure
LED Indication
1
Failure 1
HV or +B
Amber (0.5 second)/Off (0.5 second)
2
Failure 2
H Stop, V Stop, or S Connection Failure
Amber (1.5 second)/Off (0.5 second)
3
Failure 3
ABL
Amber (0.5 second)/Off (0.5 second)
4
Aging/Self Test
Amber (0.5 second)/Off (0.5 second)/
Green (0.5 second)/Off (0.5 second)
MODE
Test Mode
1
2
3
4
5
6
7
8
9
Resolution (H x V)
640 X 480
832 X 624
720 X 400
800 X 600
1024 X 768
1024 X 768
1280 X 1024
Dot Clock (MHz)
25.175
57.283
28.322
56.250
78.750
94.500
135.000
HORIZONTAL
Hor. Freq. (kHz)
31.469
49.725
31.469
53.674
60.023
68.677
79.976
H-Total
31.778
20.111
31.777
18.631
16.660
14.561
12.504
H-Blanking
6.356
5.586
6.355
4.409
3.657
3.725
3.022
H-Front Porch
0.636
0.559
0.636
0.569
0.203
0.508
0.119
H-Sync.
3.813
1.117
3.813
1.138
1.219
1.016
1.067
H-Back Porch
1.907
3.910
1.907
2.702
2.235
2.201
1.837
H-Active
25.422
14.524
25.422
14.222
13.003
10.836
9.481
(µsec)
VERTICAL
Ver. Freq. (Hz)
59.940
10
74.550
70.087
85.061
75.029
84.997
75.025
V-Total
525
667
449
631
800
808
1066
V-Blanking
45
43
49
31
32
40
42
V-Front Porch
10
V-Sync.
V-Back Porch
33
39
35
27
28
36
38
V-Active
480
624
400
600
768
768
1024
(lines)
SYNC.
Int (G)
Ext (H/V)/Polarity
YES -/-
YES -/-
YES -/+
NO +/+
YES +/+
YES +/+
YES +/+
Ext (C/S)/Polarity
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Int/Non Int
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
TIMING SPECIFICATIONS
2
1
3
1
3
640 X 480
36.000
43.269
23.111
5.333
1.556
1.556
2.222
17.778
85.008
509
29
25
480
YES -/-
NO
NO
NON INT
1
3
12
2
1600 X 1200
202.500
93.750
10.667
2.765
0.316
0.948
1.501
7.901
75.000
1250
50
46
1200
YES +/+
NO
NO
NON INT
1
3
1
3
1
3
1
3
1280 X 1024
157.500
91.146
10.971
2.844
0.406
1.016
1.422
8.127
85.024
1.072
48
44
1024
YES +/+
NO
NO
NON INT
1
3
— 5 —
CPD-E250
WARNINGS AND CAUTIONS
CAUTION
Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield, or carbon painted on the CRT, after 
removing the anode.
WARNING!!
An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis. The chassis of this 
receiver is directly connected to the ac power line.
!
 
SAFETY-RELATED COMPONENT WARNING!!
Components identifi ed by shading and ! mark on the schematic diagrams, exploded views, and in the parts list are critical for safe 
operation. Replace these components with Sony parts whose part numbers appear as shown in this manual or in supplements published 
by Sony. Circuit adjustments that are critical for safe operation are identifi ed in this manual. Follow these procedures whenever critical 
components are replaced or improper operation is suspected. 
ATTENTION!!
Apres avoir deconnecte le cap de l’anode, court-circuiter l’anode du tube cathodique et celui de l’anode du cap au chassis metallique de 
l’appareil, ou la couche de carbone peinte sur le tube cathodique ou au blindage du tube cathodique.
Afi n d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout 
dépannage. Le chássis de ce récepteur est directement raccordé à l’alimentation du secteur.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
Les composants identifi es par une trame et par une marque ! sur les schemas de principe, les vues explosees et les listes de pieces 
sont d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont le numero de 
piece est indique dans le present manuel ou dans des supplements publies par Sony. Les reglages de circuit dont l’importance est 
critique pour la securite du fonctionnement sont identifi es dans le present manuel. Suivre ces procedures lors de chaque remplacement 
de composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.
Page of 47
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Here you can read online and download Sony CPD-E250 Service Manual in PDF. CPD-E250 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony CPD-E250 Monitor. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.