AY-565
Service Manual
Proview Electronics Co.,Ltd.
6F, No.1, Pau-Sheng Road., Yung-Ho City,
Taipei 234 , Taiwan , R.O.C.
Tel : (886-2) 2231-6789 , Fax :(886-2)2231-5678
1
TABLE OF CONTENTS
SERVICE WARNING
A.
IMPORTANT SAFETY INSTRUCTION
B.
SPECIFICATIONS
C.
TIMING CHART
D.
CONTROL LOCATION
E.
BLOCK DIAGRAM
F.
CONDUCTION VIEW
G.
SCHEMATIC DIAGRAM
H.
TROUBLE SHOOTING HINTS
I.
REPLACEMENT PARTS LIST
2
WARNING
To prevent from fire or shock hazard,do not expose monitor to any rain or any form of water.High
voltage is inside the monitor so please do not remove the back cover of the cabinet if you are not a qualified
monitor engineer.
Contact the local dealer or the nearest
PROVIEW
branch office if you need help.
A. IMPORTANT SAFETY INSTRUCTION
Prior to using this service manual,please ensure that you have carefully followed all the procedures outlined in
the user's manual for this product.
1.
Read all of these instructions.
2.
Save these instructions.
3.
Follow all warnings and instructions a marked on the product.
4.
Unplug this product from the wall outlet before cleaning.Do not use liquid cleaners or aerosol cleaners, use
a damp cloth for cleaning.
5.
Do not use this product near water.
6.
Do not place this product on an unstable cart,stand or tablle.The product may fall,causing serious damage
to the product.
7.
Slots and openings in the cabinet and the back or bottom are provided for ventilation,to ensure reliable
operation of the product and to protect it from overheating,those openings must not be blocked or
covered.The openings should never be blocked by placing the product on a bed,sofa, rug, or other similar
surface.This product should not be placed in a built-in installation less proper ventilation is provided.
8.
This products should be operated from the type of power source indicated on the marketin label. If you are
not sure of the type of power available, consult your dealer or local power company
9.
This product is equipped with a 3-wire grounding type plug,a plug having a third (grounding) pin.This plug
will only fit into a grounding-type power outlet.This is a safety feature,if you are unable to insert the plug
into the outlet,contact your electrician to replace your obsolete outlet.Do not defeat the purpose of the
grounding-type plug.
10.
Do not allow anything to rest on the power cord.Do not locate this product where persons will walk on the
cord.
11.
If an extension cord is used with this product,make sure that the total of the ampere ratings on the product
plugged into the extension cord to the waplugged into outlet does not exceed 15 ampere.
12.
Never push objects of any kind into this product through cabinet slots as they may touch dangerous voltage
points or short out parts that could result in a risk of fire or electric shock.Never spill liquid of any kind on
the product.
13.
Do not attempt to service this product yourself,as opening or removing covers may expose you to
dangerous voltage points or other risks.Refer all servicing to service personnel.
14.
Unplug this product from the wall outlet and refer servicing to qualified service personnel under the
following conditions.
a. When the power cord or plug is damaged or frayed.
b. If liquid has been spilled into the product.
c. If the product has been exposed to rain or water.
d. If the product does not operate normally,when the operating instructions are followed.Adjust only those
controls that are covered by the operating instructions since improper adjustment of other controls may
result in damage and will often require extension work by a qualified technician to restore the product to
normal operation.
e. If the product has been dropped or the cabinet has been damaged.
f. If the product exhibits a distinct change in performance,indicating a need for service.
3
B. SPECIFICATIONS
1. Support display colors 16.7M color
2. Active Display Area 304.1mm (H) x 228.01mm (V)
3. Pixel Pitch 0.297(H) x 0.297(V) mm
4. Synchronization Range
A. Horizontal
B. Vertical
5. Power Source 100 – 240 Vac / 50 – 60 Hz
6. Power Consumption 40W (max.)
7. Input Signal
A. Video
B. Sync.
8. Connection Type 15 Pin D Type
9. Resolution 1024 x 768 pixels
10. Color Temperature 9300ºK / 6550ºK
11. Dimension (WxHxD) 404mm x 348.5mm x 138mm
12. Monitor Weight 5.2Kg
13. Base Operation
Tilt 0 / + 30 degree
14. Power Saving
A. ON
B. STAND BY
C. OFF
15. Signal Connector Pin Assignment
A. Pin No.
1. Red 9. Not Connected
2. Green 10. Sync. Ground
3. Blue 11. Ground
4. Ground 12. SDA
5. Self Test 13. Horizontal Sync.
6. Red Ground 14. Vertical Sync.
7. Green Ground 15. SCL
8. Blue Ground
16. Audio signal
A. 3.5Φ stereo phone jack
B. Rin, Lin :1Vrms (max)
C. 1+1 W Power amplifier
30 – 60 KHz
60 – 75 Hz
Analog R.G.B. , 0.7Vp-p / 75 Ohms
TTL level,positive or negative polarity
＜ 40W
＜ 5W
＜ 5W
4
C. TIMING CHART
SYNC
The video signal timing is as following :
Video A: Period
D B E B: Active
C: Sync Width
Sync. D: Back Porch
C A E: Front porch
Preset
Modes
VGA
640X35
0
VGA
640X400
VGA
640X480
VGA
640X480
VESA
640X480
VESA
640X480
VGA
720X350
VGA
720X400
VESA
800X600
VESA
800X600
VESA
800X600
Dot Rate
F.H
A-period 31.778
B-Active 25.422
C-Syn 3.813us 3.813us 3.813us 2.042us 1.270us 2.032us 3.813us 3.813us 2.000us 3.200us 2.400us
D-Back
Porch
E-Front
Porch
F . V 70.087
A-Period 14.268
B-Active 11.122
C-Syn 0.064ms 0.064ms 0.064ms 0.086ms 0.079ms 0.080ms 0.064ms 0.064ms 0.057ms 0.106ms 0.125ms
D-Back
Porch
E-Front
Porch
H/V
25.175
31.469
1.907us 1.907us 1.589us 3.063us 3.810us 3.810us 1.907us 1.907us 3.556us 2.200us 1.280us
0.636us 0.636us 0.954us 3.064us 1.016us 0.508us 0.635us 0.635us 0.666us 1us 1.12us
1.907ms 1.112ms 0.794ms 1.115ms 0.528ms 0.427ms 1.907ms 1.112ms 0.626ms 0.607ms 0.478ms
1.175ms 0.381ms 0.572ms 0.085ms 0.449ms 0.026ms 1.175ms 0.381ms 0.028ms 0.026ms 0.77ms
＋ － － ＋ － － － － － － － － ＋ － － ＋ ＋ ＋ ＋ ＋ ＋ ＋
Interlaced
25.175MHz 25.175MHz 31.340MHz 31.500MHz 31.500MHz 28.322MHz 28.322MHz 36.000MHz 40.000MHz 50.000MHz
MHz
31.469KHz 31.469KHz 34.978KHz 37.861KHz 37.500KHz 31.469KHz 31.469KHz 35.156KHz 37.879KHz 48.077KHz
KHz
31.778us 31.778us 28.590us 26.413us 26.667us 31.777us 31.777us 28.444us 26.400us 20.800us
us
25.422us 25.422us 20.421us 20.317us 20.317us 25.422us 25.422us 22.222us 20.000us 16.000us
us
70.087Hz 59.941Hz 66.625Hz 72.810Hz 75.000Hz 70.087Hz 70.087Hz 56.250Hz 60.317Hz 72.188Hz
Hz
14.268ms 16.683ms 15.009ms 13.734ms 13.333ms 14.268ms 14.268ms 17.778ms 16.579ms 13.853ms
ms
12.711ms 15.253ms 13.723ms 12.678ms 12.800ms 11.122ms 12.711ms 17.067ms 15.840ms 12.480ms
ms
NON NON NON NON NON NON NON NON NON NON NON
5
Preset
SYNC
Modes
VESA
800X600
MAC
832X624
VESA
1024X768
VESA
1024X768
VESA
1024X768
Dot Rate
F.H
A-period 21.333us 20.364us 20.677us 17.707us 16.660us
B-Active 16.162us 15.127us 15.754us 13.653us 13.003us
C-Syn 1.616us 2.182us 2.092us 1.813us 1.219us
D-Back
Porch
E-Front
Porch
F . V 75.000Hz 75.087Hz 60.004Hz 70.069Hz 75.029Hz
A-Period 13.333ms 13.318ms 16.666ms 14.272ms 13.328ms
B-Active 12.800ms 12.707ms 15.880ms 13.599ms 12.795ms
C-Syn 0.064ms 0.061ms 0.124ms 0.106ms 0.050ms
D-Back
Porch
E-Front
Porch
H/V
Interlaced NON NON NON NON NON
49.500MHz 55.000MHz 65.000MHz 75.000MHz 78.750MHz
46.875KHz 49.107KHz 48.363KHz 56.476KHz 60.023KHz
3.232us 1.745us 2.462us 1.920us 2.235us
0.323us 1.31us 0.369us 0.321us 0.203us
0.448ms 0.428ms 0.600ms 0.513ms 0.466ms
0.021ms 0.122ms 0.062ms 0.054ms 0.017ms
＋ ＋ － － － － － － ＋ ＋
6
D. CONTROL LOCATION
Font control panel
1. Menu Button
2. Select Button
3. Auto Button
4. Power Button
5. Power indicator
Rear panel
7
E. BLOCK DIAGRAM
VGA in
Hsync
Vsync
SDA
SCL
User IF
R
G
B
KEYKEY
DDC
SDA
SCL
A/D & Scaler
R
G
B
Hsync
Vsync
Micro processor
KEY
SDA SCL
Lin_IN_L
Phone jack In Volume
Lin_IN_R
Pre Amp
PT2257-S
Control
Control
ON/OFF
R[0..7]
G[0..7]
B[0..7]
CLOCK
L
R
HD
VD
EN
+12V
LCD Panel
R[0..7]
G[0..7]
B[0..7]
CLOCK
HD
VD
EN
Inverter
+12V
ON/OFF
Hi voltageHi voltage
Hi voltage
LS1
SPEAKER
LS2
SPEAKER
Block Diagram
Amp.
TA8227P
Proview Electronics (Taiwan) Co., LTD.
6F, NO.1, Pau-Sheng Rd., Yung-Ho City,
Taipei County, Taiwan R.O.C.
Tel: 886-2-2231-6789 Fax: 886-2-2232-4613
Title
Block Diagram
Size Document Number Rev
A
Cetus (01031),200-101-5001
Date: Sheet
19Wednesday, November 21, 2001
2.B
of
8
MAIN BOARD (Silk)
F. CONDUCTION VIEW
9
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