Tatung OMNISCAN SERIES User manual

Service Manual
COLOR MONITOR
OMNISCAN SERIES
CM17MBDjH/R
CIYI20MBDjHjR
- CTATUN& -------

TABLE OF CONTENTS
1. G EN ERAL ----------------~----------------------------------------------------------------------------- 1-1
1.1 SAFETY ------------------------------------------------------------------------------------------------------------------ 1-1
1.2 SPE CI FI CA TI 0 NS ---------------------------------------------------------------------------------------------------- 1-1
1.3 CONTROLS ------------------------------------------------------------------------------------------------------------ 1-3
1.4 MAKI NG CONN ECTI 0 NS ---------------------------------------------------------------------------------------- 1-5
2. ADJU STM ENT --------------------------------------------------------------------------~------------- 2-1
3. CI RC UIT DESCRIPTION -------------------------------------------------------------------------- 3-1
4. FLOW CHART ---------------------------------------------------------------------------------------- 4-1
5. SIG NAL IDENTIFICATION TABLE -------------------------------------------------------------- 5-1
6. TROUB LE SHOOTING------------------------------------------------------------------------------ 6-1
7. REPLACEMENT PARTS LIST ---------------~---------------------------------------------------- 7-1
8. PCB LAYOUT ---------------------------------------------------------------------------------------- 8-1
9. ASSEMBLY METHODES -------------------------------------------------------------------------- 9-1
10. CI RCU IT DIAG RAM S--------------------------------------------------------------------------------10-1
= 1-0 =

1. GENERAL
1.1 SAFETY
WARNING:
DANGEROUS VOLTAGE
ARE PRESENT IN THIS CIRCUIT WHENEVER POWER IS CONNECTED TO THE CIR-
CUIT BOARDS,
EVEN THOUGH THE PRODUCT POWER SWITCH MAY BE IN THE 'OFF' POSITION. PROPER
SAFETY PRECAUTIONS MUST BE TAKEN TO ENSURE THE SAFETY OF PERSONS WORKING ON THE
BOARDS.
POTENTIOMETER ADJUSTMENTS:
R481, R626, R818, R640, R211 SHOULD BE ADJUSTED TO CORRECT POSITION DURING FUNCTIONAL TEST.
1.2 SPECIFICATIONS
17" SPECIFICATIONS
Picture Tube
Resolution
Display Colors
*Display Area
Video Input
Video Bandwidth
Scanning Frequency
Sync. Input Form
Applications
Power Input
Power Consumption
Weight
Dimension
(W /0 base)
Safe Standard
EMI Standard
Standard Accessory
Optional Accessory
Recommended
Ambience
17 inch (16V), Dark Tinted, Anti-Glare,
.0.28/0.31 mm
dot pitch (option)
90 degree deflection.
(Dynamic focus/Single focus option)
640 x 350 (min.), up to 1280 x 1024 (max.)
unlimited
290 mm x 218 mm (typical)
Analog-RGB (positive)
BNC:
100 MHz
D-SUB:
70 MHz
Vertical: 50Hz to 90Hz (Automatic)
Horizontal: 29KHz to 66KHz (Automatic)
Separate Sync.
Sync. on green
Composite Sync.
VGA, XGA, 8514A, PGC, MACII
CAD /CAM, Workstation, etc.
Switch Selectable
AC 100 to 125V (60Hz)
AC 200 to 240V (50Hz)
120W (max.)
21.5KG/24.5KG (N.W.jG.W.)
411 x 380 x 480 mm (W/H/D)
UL/CSA, TUV Optional
FCC Class A model, Fh: 29KHz to 66KHz
FCC Class B model, Fh: 29KHz to 62KHz (Class B)
Fh: 63KHz to 66KHz (Class A)
FTZ Optional
Tilt/Swivel Base
(47 mm height)
0-15 pin to Mini 0-15 pin signal cable.
Power cord
signal cables (BNC)
Operating Temperature: + 0 to +35 degree
C,
Storage Temperature:
Humidity: -
20 to + 60 degree C,
10% to 80 %
(32 to 95 degree F)
(-4 to 140 degree F)
* Approximate only. Active display area depends on actual signal timing.
* Specifications subject to change without notice.
= 1-1 =

20" SPECIFICATIONS
Picture Tube
Resolution
Display Colors
*Display Area
Video Input
Video Bandwidth
Scanning Frequency
Sync. Input Form
Applications
Power Input
Power Consumption
Weight
Dimension
0N /0 base)
Safe Standard
EM! Standard
Standard Accessory
Optional Accessory
Recommended
Ambience
20 inch (19V), Dark Tinted, Anti-Glare,
0.31 mm dot pitch 90 degree deflection.
(Dynamic focus/Single focus option)
640 x 350 (min.), up to 1280 x 1024 (max.)
unlimited
350 mm x 262 mm (typical)
Analog-RGB (positive)
BNC: 100 MHz
D-SUB: 70 MHz
Vertical:
Horizontal:
50Hz to 90Hz (Automatic)
29KHz to 66KHz (Automatic)
Separate Sync.
Sync. on green
Composite Sync.
VGA, XGA, 8514A, PGC, MACI!
CAD/CAM, Workstation, etc.
Switch Selectable
AC 100 to 125V (60Hz)
AC 200 to 240V (50Hz)
135W (max.)
28.5KG/32.6KG (N.W./G.W.)
480 x 420 x 540 mm (W /H/D)
UL/CSA, TUV Optional
FCC Class A model, Fh: 29KHz to 66KHz
FCC Class B model, Fh: 29KHz to 62KHz (Class B)
Fh: 63KHz to 66KHz (Class A)
FTZ Optional
Tilt/Swivel
Base (47 mm height)
0-15 pin
to Mini 0-15 pin signal cable.
Power cord
signal cables (BNe)
Operating Temperature: + 0 to +35 degree
C, (32 to 95 degree F)
Storage Temperature: -20 to +60 degree C, (-4 to 140 degree F)
Humidity: 10% to 80 %
* Approximate only. Active display area depends on actual
Signal timing.
* Specifications subject to change without notice.
1-2 =

1.3 CONTROLS
17" FRONT{REAR PANEL CONTROLS
f.
II fi!iiil
-I
Push open
"'tn .. "'0. ..e- .. ~ -0·
:3
-----
.. 0.
8. V.
SIZE'
6. V. PO SITION-
7.
H. SIZE-
1. POWER LED
.
.. • l:!:t
2. POWER SWITCH
~4.
SRI GHTNESS CONTROL
3.
C
ONTRAST CONTROL
lb.d
@o5l E
I
9.
11. MEM
10. MODE
DPC
ORY RECALL
SWITCH
5. H. POSITION
Front Panel Controls
3. DEG]!'USSING SWITCH I!-+~;+---~
n
LJ
./
1. 115V/230V SWITCH -lJ--.j..g~--I::;:;--t--------l
2. POWER INPUT ~4--:~~+
'H+-I--+-+-l+- 4. BNC INPUT
CONNECTOR
7. SYNC. SW.
6. SIGNAL VOLTAGE SWITCH
5. D-SUB CONNECTOR
5. MINI D-SUB CONNECTOR
Rear Panel Control
1-3 =

20" FRONT{REAR PANEL CONTROLS
r=::::J I
"1l I
I
6. V. POSITION
7. H. SIZE
--
1. POWER LED
I
'£ t::2.
2. POWER SWITCH
J 3. CONTRAST CONTROL
\
4. BRIGHTNESS CONTROL
I PUSH OPEN
E11.
MEMORYRECALL
10. MODE SWITCH
9. DPC
L-- ______ 5. H. POSITION
Front Panel Controls
1. 115V/230V SWITCH
2. POWER INPUT
DEGAUSSING SWITCH
1'0 0
~
r-L.
>-:::
~
~
D
r'O
6~""
~
~\~
1 t
Rear Panel Control
1-4 =
a/)
y
-
f\t--
...... c"":::!
~
I
6.
5.
4. BNC INPUT
CONNECTOR
7. SYNC. SW.
SIGNAL VOLTAGE SWITCH
D-SUB CONNECTOR
5. MINI D-SUB CONNECTOR

1.4 MAKING CONNECTIONS
(1 )
IBM PC
Signal cable
(2)
Apple Macintosh LC
/
Signal cable
(3)
Apple Macintosh II
(SYNC. SW.)
ON
D
~--------......I D. SUB
(SYNC. SW.)
ON
D.SUB
D
~ _______ --J MINI
(SYNC. sw.)
ON
D.SUB
D
~ _______ ---I MINI
D. SUB
= 1-5 =

(4)
Other computers SYNC.
SW. )
( ON D
CABLEx4
(5)
Other computers SYNC.
SW.)
( ON D
R
G
Signal cable B
H
v
CABLEx5
(6)
Workstation SYNC. SW.)
( OFF
D
Signal cable R
G+SYNC.
CABLEx3
B
= 1-6 =

BNC CONNECTIONS & CABLE PIN ASSIGNMENTS
BNC Connections
R
CONNECTOR
R
G(jSYNC.)
B
H/HV
V
REMARKS:
G(jSYNC.)
SYNC. ON GREEN
RED
GREEN & SYNC.
BLUE
B
H/HV
COMPOSITE SYNC.
RED
GREEN
BLUE
H+V SYNC.
1. VIDEO SIGNAL LEVEL IS 0.7/1.0 Vp-p (SELECTABLE).
SYNC. SIGNAL LEVEL IS TTL.
2. "-" MEANS NO CONNECTION.
= 1-7 =
v
SEPARATE SYNC.
RED
GREEN
BLUE
H
V

D-SUB 15 PIN
MINI D-SUB 15 PIN
SIGNAL CABLE PIN ASSIGNMENTS
SIGNAL
PIN NO. FOR
PIN NO. FOR
D-SUB 15 PIN
MIN D-SUB 15 PIN
(MAC II)
01GA/8514A)
RED 2 1
GREEN/SYNC. ON
GREEN 5 2
BLUE 9 3
H
SYNC./H+V SYNC. 7
13
V SYNC.jV MODE 8
14
GROUND 1 4 6 11 13
14 467 8 10
11
OPEN PIN 3
10 12 15
5 9
12 15
= 1-8 =