Acer 7277e User manual

7277e Monitor
Service Guide
September 1998
Printed in Taiwan PART NO.:49.70601.271
DOC NO.:9809A-7277ESG

API Confidential
No Copy/Reproduction Allowed 7277e Monitor Service Guide
ii
Copyright
Copyright symbol 227 \f "Symbol" \s 10} 1998 by Acer Peripherals, Inc. All rights reserved. No part of this
publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any
language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written permission of Acer Peripherals, Inc.
Disclaimer
Acer Peripherals, Inc. makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranties, mechantability or fitness for any particular purpose.
Further, Acer Peripherals, Inc. reserves the right to reserve this publication and to make changes from time to time
in the contents hereof without obligation of Acer Peripherals, Inc. to notify any person of such revision or changes.

Table of Contents API Confidential
No Copy/Reproduction Allowed iii
Table of Contents
toc \o "1-3" \t "chapter title,1,subtitle 02,2,subtitle 03,3,subtitle 04,4"
Table of Contents.......................................................................................................................................................iii
1. SYSTEM OVERVIEW.......................................................................................................................................................1-1
1.1 Introduction .........................................................................................................................................................1-1
1.2 Operational Specification ....................................................................................................................................1-2
1.2.1 Environment.......................................................................................................................................1-2
1.2.1.1 Temperature.......................................................................................................................1-2
1.2.1.2 Humidity............................................................................................................................1-2
1.2.1.3 Altitude..............................................................................................................................1-2
1.2.2 Vibration.............................................................................................................................................1-2
1.2.3 Drop Test (with packing)....................................................................................................................1-2
1.2.3.1 Drop Height.......................................................................................................................1-2
1.2.3.2 Drop Sequence...................................................................................................................1-2
1.2.4 Electrostatic Discharge Requirements................................................................................................1-2
1.2.5 Safety Requirements...........................................................................................................................1-3
1.2.5.1 110V Version.....................................................................................................................1-3
1.2.5.2 220V Version.....................................................................................................................1-3
1.2.6 EMC Requirements ............................................................................................................................1-3
1.2.6.1 110V Version.....................................................................................................................1-3
1.2.6.2 220V Voltage.....................................................................................................................1-3
1.2.7 Acoustical Noise.................................................................................................................................1-3
1.2.8 Reliability...........................................................................................................................................1-3
1.3. Input/Output Specifications................................................................................................................................1-4
1.3.1 Input Signal Requirements .................................................................................................................1-4
1.3.1.1 Signal cable (Directly attached to unit) .............................................................................1-4
1.3.1.2 Video Signal......................................................................................................................1-4
1.3.1.3 SYNC Signal.....................................................................................................................1-4
1.3.1.4 Timing ...............................................................................................................................1-5
1.3.1.5 Input Signal Quality...........................................................................................................1-7
1.3.2 Power Supply Requirements...............................................................................................................1-7
1.3.2.1 Input Power Requirements ................................................................................................1-7
1.3.2.2 Output Power Requirements..............................................................................................1-8
1.3.2.3 AC Power Inlet..................................................................................................................1-8
1.3.2.4 Power Cord........................................................................................................................1-8
1.3.2.5 Power Management Function............................................................................................1-8
1.3.3 CRT Requirements.............................................................................................................................1-8
1.4 Functional Specifications.....................................................................................................................................1-9
1.4.1 Display Quality...................................................................................................................................1-9
1.4.1.1 Display Date Area (with 20 ft-l at full white pattern)........................................................1-9
1.4.1.2 Video AMP Performance ..................................................................................................1-9
1.4.1.3 Light Output ......................................................................................................................1-9
1.4.1.4 Contrast Adjustment Range...............................................................................................1-9
1.4.1.5 Brightness Adjustment Range ...........................................................................................1-9
1.4.1.6 Linearity (set to 20 Ft-L at full white pattern first) at Crosshatch Pattern.........................1-9
1.4.1.7 Geometric Distortion (with 20Ft-L at full white pattern)..................................................1-10
1.4.1.8 Size Stability......................................................................................................................1-10
1.4.1.9 Swing & Jitter....................................................................................................................1-10
1.4.1.10 Focus (The distance of watch is 30cm from eyes to screen)............................................1-10
1.4.1.11 DDC1/2B Table...............................................................................................................1-10
1.4.2 Color Quality......................................................................................................................................1-14
1.4.2.1 Misconvergence.................................................................................................................1-14
1.4.2.2 Moire (the distance of watch is 30cm from eyes to screen)...............................................1-15
1.4.2.3 Impurity.............................................................................................................................1-15
1.4.2.4 White Balance ...................................................................................................................1-15
1.4.2.5 Uniformity.........................................................................................................................1-15
1.4.2.6 Degaussing ........................................................................................................................1-15
1.4.3 Controls & Presetting .........................................................................................................................1-15
1.4.3.1 User Control (on the front panel).......................................................................................1-15
1.4.3.2 Presetting...........................................................................................................................1-16
1.4.3.3 User Setting.......................................................................................................................1-16
1.4.3.4 Microcontroller Control.....................................................................................................1-17
1.4.3.5 OSD Screen Position.........................................................................................................1-17

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iv
1.5 Physical Specifications........................................................................................................................................1-17
1.5.1 Physical Diminution & Appearance...................................................................................................1-17
1.5.1.1 Overall Dimensions...........................................................................................................1-17
1.5.1.2 Net Weight.........................................................................................................................1-17
1.5.1.3 Outer Appearance..............................................................................................................1-17
1.5.2 Construction and Materials on Outer Surface.....................................................................................1-17
1.5.3 Base & Swivel....................................................................................................................................1-17
1.5.4 Marking & Labels...............................................................................................................................1-17
1.5.4.1 Reference Label (Rear panel)............................................................................................1-17
1.5.4.2 Controls & Connectors......................................................................................................1-17
1.5.5 Packaging ...........................................................................................................................................1-18
1.5.5.1 Carton Dimension..............................................................................................................1-18
1.5.5.2 Shipping Weight................................................................................................................1-18
1.6 Maintainability Specifications.............................................................................................................................1-18
1.6.1 General & Requirements ....................................................................................................................1-18
1.6.1.1 Installation.........................................................................................................................1-18
1.6.1.2 Periodic Maintenance........................................................................................................1-18
1.6.1.3 Repair & Calibration .........................................................................................................1-18
1.6.2 Mean Time to Repair..........................................................................................................................1-18
1.6.2.1 Module Level.....................................................................................................................1-18
1.6.2.2 Component Level ..............................................................................................................1-18
1.6.3 Accessibility.......................................................................................................................................1-18
1.6.3.1 General ..............................................................................................................................1-18
1.6.3.2 Outside Cabinet, Access to the Following Elements.........................................................1-18
1.6.3.3 Cover Removal, Access.....................................................................................................1-18
1.6.4 Equipment & Tools Required.............................................................................................................1-18
1.6.4.1 Standard Test Equipment...................................................................................................1-18
2. CIRCUIT OPERATION THEORY.....................................................................................................................................2-1
2. 1 Deflection CKT ..................................................................................................................................................2-1
2.1.1 The Block Diagram of Deflection ......................................................................................................2-1
2.1.2 Autosync Deflection Controller (TDA4854)......................................................................................2-1
2.1.3 H-Driver & Output CKT ....................................................................................................................2-2
2.1.4 Dynamic Focus CKT..........................................................................................................................2-2
2.1.4.1 Vertical Dynamic Focus....................................................................................................2-3
2.1.4.2 Horizontal Dynamic Focus................................................................................................2-3
2.1.5 Brightness & Spot Killer CKT ...........................................................................................................2-3
2.1.5.1 G1 CKT.............................................................................................................................2-3
2.1.5.2 Blanking CKT ...................................................................................................................2-3
2.1.6 BDRV and Step-up CKT....................................................................................................................2-4
2.1.7 H-center CKT.....................................................................................................................................2-5
2.1.8 HV Shutdown Circuit.........................................................................................................................2-5
2.1.9 Horizontal Linearity CKT ..................................................................................................................2-5
2.1.10 ABL CIRCUIT.................................................................................................................................2-6
2.1.11 TILT CKT ........................................................................................................................................2-7
2.1.12 Vertical Output Circuit.....................................................................................................................2-7
2.2 Switching Power Supply Operation Theory........................................................................................................2-8
2.2.1 General Specification .........................................................................................................................2-8
2.2.2 Block Diagram....................................................................................................................................2-8
2.2.3 Circuit Operation Theorem.................................................................................................................2-8
2.2.3.1 RFI Filter...........................................................................................................................2-8
2.2.3.2 Rectifier and Filter.............................................................................................................2-8
2.2.3.3 Switching Element and Isolation Transformer..................................................................2-9
2.2.3.4 Output Rectifier and Filter.................................................................................................2-9
2.2.3.5 Control Circuit...................................................................................................................2-9
2.2.3.6 Feedback Circuit................................................................................................................2-10
2.2.3.7 Degauss Circuit .................................................................................................................2-10
2.2.3.8 Power Saving Control........................................................................................................2-11
2.2.4 Video C.K.T. Block Diagram.............................................................................................................2-11
2.2.4.1 OSD Preamp CKT.............................................................................................................2-11
2.2.4.2 CRT DRIVER CKT ..........................................................................................................2-12
2.2.4.3 DC Restore CKT ...............................................................................................................2-12
2.2.4.4 ABL CKT (Auto Brightness Limit)...................................................................................2-12
2.2.4.5 H-BLANK CKT................................................................................................................2-12
2.2.4.6 Brightness, V-blank, Change Mode Blank, Spotkiller CKT..............................................2-12
2.3 Microcontroller Circuit Operation Theory...........................................................................................................2-12

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2.3.1 Introduction ........................................................................................................................................2-12
2.3.2 Block diagram.....................................................................................................................................2-13
2.3.3 MCU and the Peripheral Circuit Operation Theory............................................................................2-13
2.3.3.1 MCU Function...................................................................................................................2-13
2.3.3.2 How to Detect Mode Timing.............................................................................................2-13
2.3.3.3 Hat are the Valid Key Functions for User .........................................................................2-14
2.3.3.4 How to Memorize the Timing and Adjusted Data.............................................................2-14
2.3.3.5 How to Display the OSD Menu.........................................................................................2-14
2.3.3.6 How to Execute the Auto Alignment Function..................................................................2-14
2.3.3.7 Flowchart for Auto Calibration .........................................................................................2-15
3. ALIGNMENT PROCEDURE.............................................................................................................................................3-1
3.1 Preparation for Alignment...................................................................................................................................3-1
3.2 BAdjustment........................................................................................................................................................3-1
3.3 HV Adjustment....................................................................................................................................................3-1
3.4 H-center Adjustment............................................................................................................................................3-1
3.5 H-size Preset........................................................................................................................................................3-1
3.6 Factory Setting Mode Adjustment.......................................................................................................................3-1
3.7 Focus Adjustment................................................................................................................................................3-2
3.8 Convergence Adjustment.....................................................................................................................................3-2
3.9 Color Temperature Auto Aalignment..................................................................................................................3-2
3.9.1 Preparing Items...................................................................................................................................3-2
3.9.2 Alignment Procedure..........................................................................................................................3-2
3.9.3 Clear All of User Mode Data..............................................................................................................3-2
3.10 Geometry Specification .....................................................................................................................................3-2
3.11 Power Saving Function Check...........................................................................................................................3-3
4. TROUBLESHOOTING ......................................................................................................................................................4-1
4.1 Check MCU and OSD for No Video Output.......................................................................................................4-1
4.2 Check OSD, MCU for No OSD Window............................................................................................................4-2
4.3 Video Board.........................................................................................................................................................4-2
4.4 No Output Power.................................................................................................................................................4-3
4.5 No Raster.............................................................................................................................................................4-4
4.6 H.V. Abnormal ....................................................................................................................................................4-4
4.7 Check IC201........................................................................................................................................................4-5
4.8 No Vertical Output and Retrace Line No Blanking.............................................................................................4-6
4.9 Spot Killer NG.....................................................................................................................................................4-6
4.10 Focus NG...........................................................................................................................................................4-7
4.11 Horizontal Size Can Not Control.......................................................................................................................4-7
4.12 Size Regulation NG...........................................................................................................................................4-8
4.13 Unstable Vertical Display..................................................................................................................................4-8
4.14 No Blanking.......................................................................................................................................................4-9
Appendix A..............................................................................................................................................................................A-10
7277E Spare Parts List...............................................................................................................................................A-10
Important Service Instruction......................................................................................................................A-11

System Overview API Confidential
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Chapter 1
SYSTEM OVERVIEW
1.1 Introduction
This specification describes a low-cost high performance 17" color auto-scan monitor which will operate
with highend Windows and CAD/CAM applications. This intelligent monitor is microprocessor controlled with
a powerful memory base of pre-programmed screen and input configurations. It also allows users to place
their own settings into memory via external controls. It's setting status is indicated on screen. It is
compatible with various kind of computers and graphics adapters it synchronizes automatically with the
signal from 30kHz to 72kHz horizontal frequency and from 50Hz to 120Hz Vertical scan frequency. When it
works on 1024 x 768 non-interlaced/70Hz mode, the refresh rate for flicker-free high quality image will help to
reduce eye strain. A power management function has been designed to save power consumption and power
management is compliant with VESA and TCO. The monitor is available with two industrial designs: one for
ACER and the other for OEM.
It has the following features:
-With unique design of iScreen
-universal switching power supply
-0.28mm dot pitch CRT
-User controls: Power on/off, " P " , " " , " " , " S " , are all in front bezel.
-On screen control indicators for user:
<P1>display Contrast,Brightness,H-phase,H-size,V-center,V-size,Pincushion,Trapezoid,Tilt adjustment
status.
<P2>display Manual degaussing,iColor control and adjustment status.
<P3>display mode timings status.
-Power on/off indicator
-Power on auto degaussing
-20 seconds auto save function
-Total 32 modes for factory and user settings
-Tilt and swivel base
-Detachable power cable
-VGA resolution at 31.5kHz
640 X 400
640 X 480
-6448A resolution: 640X480 at 37.5kHz
-6448B resolution: 640X480 at 43.27kHZ
-SVGA resolution: 800X600 at 37kHZ to 48kHz
-UVGA resolution: 1024X768 at 48kHZ to 60kHz
-WS resolution: 1280 X 1024 (non-interlaced) at 64KHz/60kHz
-Automatic scanning all horizontal frequencies from 30kHz to72kHz
add all vertical frequencies between 50Hz and 120Hz
-Power management function
-MPRII function

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1.2 Operational Specification
1.2.1 Environment
1.2.1.1 Temperature
-Operating 5 to +40 degrees Celsius
-Non-operating -20 to +60 degrees Celsius
1.2.1.2 Humidity
-Operating 20% to 90% non-condensing
-Non-operating 10% to 90% non-condensing
1.2.1.3 Altitude
-Operating 0 to 3,048m (10,000ft)
-Non-operating 0 to 12,192m (40,000ft)
-Operating condition / without packing
-Non-operating condition / with packing
1.2.2 Vibration
Package, Non-Operating
-5--26.6Hz : 0.6G
-26.6--50Hz: 0.016"
-50--500H : 2G
-Total Test Time : 312min
(104min/Axis for X, Y, Z)
After test, there is no electrical and mechanical damage permitted.
1.2.3 Drop Test (with packing)
1.2.3.1 Drop Height
PKG. Gross Wt. No. of Drops Drop Height
41 - 60.991b(18.7-27.7kg) 10 24"(61cm)
1.2.3.2 Drop Sequence
2
1
53
4
6
Surface 2. Front
3. Bottom
4. Rear
5. Left
6. Right
1. Top
Manufacturing
joint
-Corner 5-3-2 select at weakness side [the low left(or right) corner of the front panel]
-An edge drop with impact on the shortest edge radiating from corner 5-3-2
-An edge drop with impact on the next shortest edge radiating from corner 5-3-2
-An edge drop with impact on the longest edge radiating from corner 5-3-2
-A flat drop with impact on the rear
-A flat drop with impact on the front
-A flat drop with impact on the right
-A flat drop with impact on the left
-A flat drop with impact on the bottom
-A flat drop with impact on the top
After test, there is no electrical and mechanical damage permitted.
1.2.4 Electrostatic Discharge Requirements
The subject product must withstand 15kv test voltage of electrostatic discharge and meet the

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requirement as specified in ESD standard IEC801-2.
1.2.5 Safety Requirements
The display unit complies with the following safety standards and specifications.
1.2.5.1 110V Version
-UL compliance...standard for information-processing and business equipment, UL 1950.
-CSA compliance...standard C22.2 No. 950-M89, data processing equipment.
-DHHS...rules 21 sub-chapter J as of date of manufacture.
1.2.5.2 220V Version
-TUV compliance...EN60950 safety specification-business equipment.
-PTB...German X-ray emission standards.
-ZH1/618...German ergonomic standard.
-ISO9241-3...Ergonomic Requirements of Visual Display.
-Demko...EN60950.
-Nemko...EN60950.
-Semko...EN60950.
-Fimko...EN60950.
-CE marking compliance...73/23/EEC (EN60950)
1.2.6 EMC Requirements
This display unit complies with the following RFI rules and regulations.
1.2.6.1 110V Version
-FCC compliance....FCC Rule, Part 15, Subpart B, Class B.
-VCCI
1.2.6.2 220V Voltage
-CE Mark Compliance...89/336/EEC.
EN50082-1, IEC801-2, IEC801-3,IEC801-4.
EN50081-2, EN55022, CLASS B.
EN60555-2, EN60555-3.
-DNSF compliance...EN 55022, class B
-Low Radiation...MPRII
1.2.7 Acoustical Noise
With the display operating, the issue of sound measured is contained within 40 dB/A in the audible
field.
1.2.8 Reliability
Demonstration MTBF of the display unit shall be greater than 60,000 hours excluding the picture tube.

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1.3. Input/Output Specifications
1.3.1 Input Signal Requirements
1.3.1.1 Signal cable (Directly attached to unit)
1.3.1.1.1 Video Inputs
-15pin mini D-sub connector is on the captive signal cable for IBM VGA, 8514A or
compatible graphics adapters The pin assignment's of this connector are as the follows.
15
610
11 15
**15pin mini D-sub male
1 RED VIDEO
2 GREEN VIDEO
3 BLUE VIDEO
4 GROUND
5 GROUND
6 RED GROUND
7 GREEN GROUND
8 BLUE GROUND
9 +5V
10 SYNC GROUND
11 GROUND
12 SDA
13 H.SYNC (H+V)
14 V.SYNC
15 SCL
1.3.1.1.2 Cable Length
1500mm +- 20mm
1.3.1.2 Video Signal
Analog 0.7 Vpp/75 ohm positive.
1.3.1.3 SYNC Signal
- Separate SYNC : TTL level
- Horizontal SYNC : positive/negative
- Vertical SYNC : positive/negative
- Composite SYNC : TTL level, positive/negative

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1.3.1.4 Timing
The video signal timing is as follows.
SEPARATE SYNC.
A
O
Q
P
S
video
R
VERTICAL
Sync. Polarity: Positive/Negative
HORIZONTAL
video
D
C
B
E
- PRESET TIMING
- VGA/SVGA Timing
VGA400 VGA480 6448A 6448B
( fH) 31.47KHz 31.47KHz 37.50KHz 43.27KHz
(Aus) 31.77 31.77 26.667 23.111
(Bus) 3.81 3.81 2.032 1.556
(Cus) 1.907 1.907 3.81 2.222
(Dus) 25.42 25.42 20.317 17.778
(Eus) 0.64 0.64 0.508 1.56
(fv) 70.08Hz 59.94Hz 75.0Hz 85Hz
(Oms) 14.27 16.68 13.333 11.764
(Pms) 0.064 0.064 0.080 0.069
(Qms) 1.112 1.05 0.427 0.578
(Rms) 12.711 15.25 12.80 11.093
(Sms) 0.383 0.32 0.027 0.024

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Display
Resolution 640x400 640x480 640x480 640x480
Polarity H/V -/+ -/- -/- -/-
SYNC Type separate separate separate separate
- PRESET TIMING
- VGA/SVGA Timing
SVGA3 SVGA4 SVGA5 UVGA7
Compatible
(fH) 48.09KHz 46.875KHz 53.67KHz 60.023KHz
(Aus) 20.794 21.333 18.631 16.660
(Bus) 2.399 1.616 1.138 1.219
(Cus) 1.279 3.232 2.702 2.235
(Dus) 15.995 16.162 14.222 13.003
(Eus) 1.119 0.323 0.569 0.203
(fv) 72.01Hz 75Hz 85Hz 75.029Hz
(Oms) 13.887 13.333 11.756 13.328
(Pms) 0.124 0.064 0.056 0.05
(Qms) 0.667 0.448 0.503 0.466
(Rms) 12.510 12.8 11.179 12.795
(Sms) 0.772 0.021 0.018 0.017
Display
Resolution 800x600 800x600 800x600 1024x768
Polarity H/V +/+ +/+ +/+ +/+
sync Type separate separate separate separate
- 1024 X 768 Non-interlaced Timing
- 1280 X 1024 Timing
UVGA1 UVGA2 WS2
(fH) 48.363kHz 56.476kHz 63.69kHz
(Aus) 20.677 17.707 15.548
(Bus) 2.092 1.813 0.972
(Cus) 2.462 1.920 2.242
(Dus) 15.754 13.653 11.96
(Eus) 0.369 0.320 0.374
(fv) 60.004Hz 70.069Hz 60.392Hz
(Oms) 16.66 14.272 16.558
(Pms) 0.124 0.106 0.047
(Qms) 0.6 0.513 0.498
(Rms) 15.88 13.599 15.921
(Sms)0.062 0.053 0.90

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- Display
- Resolution
1024x768 1024x768 1280x1024
- Polarity H/V -/- -/- +/+
- Sync type separate separate separate
- UVGA8
(fH) 68.677KHz
(Aus) 14.561
(Bus) 1.016
(Cus) 2.201
(Dus) 10.836
(Eus) 0.508
(fv) 85Hz
(Oms) 11.765
(Pms) 0.044
(Qms) 0.524
(Rms) 11.183
(Sms) 0.015
Display
Resolution 1024X768
Polarity H/V +/+
Sync Type separate
1.3.1.5 Input signal Quality
(1) Rise/Fall time
Video Signal : less than 3.5ns
Horizontal SYNC : less than 50ns
Vertical SYNC : less than 100ns
(2) TTL Signal Level
The levels of Horizontal & Vertical SYNC will be TTL level, their high level will be 2.4-5.5V, and
low level will be 0-0.2V.
(3) Video Signal Level
The video signal when terminated with an idea 75ohm termination will have a range of 0V to
0.7V (nominal), and its full scale output will be 0.7V and black level will be between 0V and 0.1V.
1.3.2 Power Supply Requirements
1.3.2.1 Input Power Requirements
(1) Input Voltage Range
The unit shall meet all the operating requirements with an input voltage range of 90-264 Vac
(2) Input Current
Maximum
Input Current Measuring Range
(MAX) 1.5 Arms with PFC 90Vac -- 264Vac
(MAX) 2.5Arms w/o PFC
(3) Frequency Range
The unit shall operate within a frequency range of 47Hz to 63Hz.

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(4) Inrush Current
Power supply inrush current shall be less than 50A for all conditions of line voltage.
(5) Regulator Efficiency
70% minimum (measuring at 115Vac and full load)
(6) Synchronization
The switching frequency of unit must be designed to synchronize to the horizontal frequency of
the display unit.
(7) Power line Transient Immunity
The power supply shall function properly after being subjected to a 0.3us/1.2us, 2000 volt high
peak pulse, or 5ns/10ns, 1500 volt fast peak pulse applied either differentially or single endedly
to line and neutral at any phase of the power line voltage and shall not cause an unsafe or
unrecoverable errors.
(8) Power consumption
Maximum 100 Watts(with USB maximum 115w) at full scan display size with full load pattern.
1.3.2.2 Output Power Requirements
The power circuit shall supply DC power outputs as followings:
Output Nominal Regulation Load Current Range
1 14V 3% 0.4A-0.75A
2 80V 3% 0.02A-0.15A
3 6.5V 3% 0.6A-0.95A
4 45V 3% 0.8A-1.0A
5 5V 3% 0.02A-2.0A
1.3.2.3 AC Power Inlet
The display unit shall be supplied with an AC power NICOON NC-174(or equivalent), to be
located at the rear of the display.
1.3.2.4 Power Cord
Each display unit shall be supplied with a power cord, with length of 1800 king cord KC-003 or
equivalent.
1.3.2.5 Power Management Function
Mode Power
Consumption H/V Sync LED Color & status Heater voltage Recovery Time
Normal Normal Both exist Green Normal Yes ----------
Stand-by 15W Max H off/V ON Amber Yes immed.
suspend 5W Max H ON/V off Amber *Blinking Yes 8 sec
off 5W Max None Amber *Blinking None 8 sec
**Override Normal None Green Normal Yes ----------
1.3.3 CRT Requirements
The color picture tube used shall be a 17 inch, 90 degrees, HI-RES tube and shall have the following
features:
-Type: 17" in line electron gun, full square/flat face.
-Dot pitch: 0.28mm dot triad
-Phosphor: P22 or equivalent
-Light transmittance: 52%
-Faceplate treatment: non-glare
-Double focus

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1.4 Functional Specifications
All the tests to verify specifications in this section must be performed under the following standard conditions
unless otherwise noted. The standard conditions are:
-Temperature : 25 +-5 degree Celsius
-Magnetic field : No additional magnetic field in near side, CRT faces to East.
-AC line input voltage : 110Vac
-Warm-up time : 30 minutes minimum
-Checking display mode : All the presenting modes, as 3.1.4 shown.
1.4.1 Display Quality
1.4.1.1 Display Date Area (with 20 ft-l at full white pattern)
(1) Horizontal 310 4mm
(2) Vertical 230 4mm
1.4.1.2 Video AMP Performance
(1) Video bandwidth : 110MHZ
(2) Resolution : 1280 X 1024 max(center)
(3) Effective rise/fall time : 6.5ns typical
(4) Ringing : 10% max, first overshoot
4% max, second overshoot
1% max, third overshoot
(5) Sag : 5% max (at horizontal freq.)
Measurement Condition:
Signal Input Source: Chrome Signal generator
Input Timing / pattern : Fh=64KHz
Cross-hatch pattern measure method: Input Cross-hatch pattern signal, then set External
contrast Adjustment max. and Brightness 30 and measure the output signal from each cathode
of detached CRT socket at the equivalent cathode capacitance when probe is attached. From
measuring the high frequency part of Input signal, we get the video AMP performance parameter
defined above.
1.4.1.3 Light Output
(1) At 3" block pattern (ABL is non-working) : 35Ft-L min (C1 ~ C5).
(2) At full-white pattern (ABL is working) : 28Ft-L min.
All the above is based on the conditions that Raster cut-off and contrast control is set to
maximum.
1.4.1.4 Contrast Adjustment Range
over 15dB
1.4.1.5 Brightness Adjustment Range
At contrast control set at maximum level, adjusting Brightness control from minimum to
maximum position, the light output of 3" block pattern shall be increased more than 15 minimum .
If adjusting Brightness control from factory setting to minimum level, the 3" block pattern shall be
extinguished when contrast control is set minimum also.
1.4.1.6 Linearity (set to 20 Ft-L at full white pattern first) at Crosshatch Pattern
(1) Vertical Non-linearity 5% max. as Fig.1
(2) Horizontal Non-linearity 5% max. as Fig.1

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1.4.1.7 Geometric Distortion (with 20Ft-L at full white pattern)
(1) Top/Bottom Pincushion 2.0 mm max. as Fig.2 a1 or a2
(2) Side Pincushion 2.0 mm max. as Fig.2 b1 or b2
(3) Top/Bottom Barreling 2.0 mm max. as Fig.3 a1 or a2
(4) Side Barreling 2.0 mm max. as Fig.3 b1 or b2
(5) Vertical Trapezoid 2.0 mm max. as Fig.4 |AD-BC|
(6) Horizontal Trapezoid 2.0 mm max. as Fig.4 |AB-CD|
(7) Tilt 1.2 mm max. as Fig.5 b1 or b2
(8) Orthogonal 2.0 mm max. as Fig.5 a1 or a2
(9) Picture Centering 6.0 mm max. as Fig.5
1.4.1.8 Size Stability
Picture growth from 5 Ft-L to maximum Ft-L shall be less than 3mm with full white pattern
(double side).
1.4.1.9 Swing & Jitter
Swing & Jitter are not permitted in the conditions stated as followings:(the distance of watch is
30cm from eyes to screen)
(1) AC power input fluctuated from 90Vac to 264Vac.
(2) Brightness & contrast control changed from max, to min. or vice versa.
1.4.1.10 Focus (The distance of watch is 30cm from eyes to screen)
Under the condition of luminance of 20Ft-L at full-white pattern (brightness control factory
setting, contrast control adjusted), all # characters on the screen in the "#" pattern will be clear.
1.4.1.11 DDC1/2B Table
Address Data Description
00 00
01 FF
02 FF
03 FF Header
04 FF
05 FF
06 FF
07 00
08 06 ID Manufacturer Name = API
09 09
0A 1C ID Product Code = 7277e
0B 97 (Vender Assigned code)
0C * ID Serial Number
0D * 32 bits serial no.
0E * (use 0 if n/a)
0F *
10 * Week of Manufacture (0-53),use 0 if n/a
11 * Year of Manufacture (year - 1990)
12 01 EDID version
13 01 Revision
14 0C Video Input Define
15 1F Max. H. Image Size (cm)
16 17 Max. V. Image Size (cm)
17 A7 (gamma*100) - 100
18 E8 DPMS
19 94 Red Green Bits Rx1Rx0Rxy1Ry0Gx1Gx0Gy1Gy0
1A AE Blue White Bits Bx1Bx0By1By0Wx1Wx0Wy1Wy0
1B 9E Red x bit9-2
1C 58 Red y bit9-2

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1D 4A Green x bit9-2
1E 9C Green y bits9-2
1F 27 Blue x bit9-2
20 10 Blue y bit9-2
21 47 White x bit9-2
22 4F White y bit9-2
Address Data Description
23 A4 Established Timing I
24 CE Established Timing II
25 00 Established Timing III
26 45 Standard Timing Identification
27 59 #1 800x600 / 85Hz
28 81 #2 1280x1024 / 60Hz
29 80
2A 31 #3 640x480 / 85Hz
2B 59
2C 61 #4 1024x768/85Hz
2D 59
2E 01 #5
2F 01
30 01 #6
31 01
32 01 #7
33 01
34 01 #8
35 01
36 00 Detailed Timing Description # 1
37 00
38 00
39 FE
3A 00
3B 4D
3C 6F
3D 6E
3E 69
3F 74
40 6F
41 72
42 0A
43 20
44 20
45 20
46 20
47 20
Address Data Description
48 00 Detailed Timing Description # 2
49 00
4A 00
4B FE
4C 00
4D 4D
4E 6F
4F 6E
50 69
51 74
52 6F
53 72
54 0A
55 20

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56 20
57 20
58 20
59 20
5A 00 Detailed Timing Description # 3
5B 00
5C 00
5D FE
5E 00
5F 4D
60 6F
61 6E
62 69
63 74
64 6F
65 72
66 0A
67 20
68 20
69 20
6A 20
6B 20
Address Data Description
6C 00 Detailed Timing Description # 4
6D 00
6E 00
6F FE
70 00
71 4D
72 6F
73 6E
74 69
75 74
76 6F
77 72
78 0A
79 20
7A 20
7B 20
7C 20
7D 20
7E 00 Extension Flag
7F * Check sum
Serial number format : API
Bar code ID of model name:
Note 1
Bit Bit Description
7 Analog / Digital Signal Level
6 Signal Level Standard (6)
5 Signal Level Standard (5)
4Setup
3 Sync Inputs Supported (3)
2 Sync Inputs Supported (2)
1 Sync Inputs Supported (1)
0 Sync Inputs Supported (0)

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Bit Description
7 Analog / Digital Input : Defines usage of the rest if the byte as "analog input" or digital
input". Analog=0, Digital=1 . If input is described as analog, the following definitions apply
to bits 6-0. Digital is as yet undefined in the following but provisions have been made in
anticipation of a common video output standard for Flat Panel Display (FPD) use.
6:5 Signal Level Standard (6:5) : Refer to the following bit definitions. Identified by the level of
reference white volts above blank, followed by the level of the sync tips in volts below
blank.
Bit 6 Bit 5 Operation
0 0 0.700V/0.300V (1.000V p-p)
0 1 0.714V/0.286V (1.000V p-p)
1 0 1.000V/0.400V (1.400V p-p)
1 1 Reserved; TBD
4 Setup: If set, the display is set to expect a blank-to-black setup or pedestal per the
appropriate signal level standard.
3:0 Sync Inputs (See Bit Operation below)
3 Separate Sync
2 Composite Sync (on H Sync line)
1 Sync on Green Video
0 Serration of the V.Sync Pulse is required when composite sync or sync-on-green
video is used
Note 2
Bit 7 Stand-by
Bit 6 Suspend
Bit 5 Active off
Bit 4:3 Display Type
0,0 - Monochrome/gray scale display
0,1 - RGB color display
1,0 - Non-RGB multicolor display (example:RGY)
1,1 - Undefined.
Bit 2:0 Reserved. Set at 00h until defined.
Note 3
CRT Vender Red (x/y) Green (x/y) Blue (x/y) Gamma
Philips 0.620/0.345 0.290/0.610 0.155/0.065 2.67

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Note 4
Byte 1 bit Established Timings 1 Source
7 640*400 @ 70Hz (720x400) (VGA, IBM)
6 720*400 @ 88Hz (XGA2, IBM)
5 640*480 @ 60Hz (VGA, IBM)
4 640*480 @ 67Hz (Mac II, Apple)
3 640*480 @ 72Hz (VESA)
2 640*480 @ 75Hz (VESA)
1 800*600 @ 56Hz (VESA)
0 800*600 @ 60Hz (VESA)
Byte 2 bit Established Timings II
7 800*600 @ 72Hz (VESA)
6 800*600 @ 75Hz (VESA)
5 832*624 @ 75Hz (Mac II, Apple)
4 1024*768 @ 87Hz (interlaced) (IBM)
3 1024*768 @ 60Hz (VESA)
2 1024*768 @ 70Hz (VESA)
1 1024*768 @ 75HZ (VESA)
0 1280*1024 @ 75HZ (VESA)
Byte 3 bit Manufacturer's Timings Manufacturer's Specified Timing
7 1152*870 @ 75Hz (Mac II, Apple)
6 640*480 @ 85HZ
5 800*600 @ 85HZ
4 1024*768 @ 85HZ
3 1280*1024 @ 85HZ
2 1600*1200 @ 75HZ
1 1600*1200 @ 85HZ
0 Flag If set = 1,then bits 6 - 1 (inclusive)
should be interpreted as Manufacture
Timings as EDID
Ver 1 Rev 0.
1.4.2 Color Quality
1.4.2.1 Misconvergence
Use "crosshatch" white pattern, then set the brightness control at weight number is 50 & contrast
control max to examine the convergence. The misconvergence must strictly meet the
requirements stated as follows:
+
A
B
310mm
230mm A : <= 0.30mm
B : <= 0.40mm
Center <= 0.15mm