Acer 7299sl User manual

7299sl Monitor
Service Guide
January 1998
Printed in Taiwan PART NO.: 49.71M01.021
DOC NO.: 9902A-7299SLSG
Copyright
Copyright 1999 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.

ii API Confidential
No Copy/Reproduction Allowed 7299sl Service Guide

Table of Contents API Confidential
No Copy/Reproduction Allowed iii
Table of Contents
Table of Contents ..............................................................................................................................................iii
1.SYSTEM OVERVIEW..................................................................................................................................1-1
1.1 Introduction...................................................................................................................................1-1
1.2 Operational Specification..............................................................................................................1-1
1.2.1 Environment.................................................................................................................1-1
1.2.1.1 Temperature.................................................................................................1-1
1.2.1.2 Humidity......................................................................................................1-1
1.2.1.3 Altitude........................................................................................................1-1
1.2.2 Transportation ..............................................................................................................1-2
1.2.2.1 Vibration Test..............................................................................................1-2
1.2.2.2 Drop Test ....................................................................................................1-2
1.2.3 Packing Configuration..................................................................................................1-3
1.2.3.1 Container Specification...............................................................................1-3
1.2.3.2 Carton Specification....................................................................................1-3
1.2.3.3 Container Stowing & Carrying Specification..............................................1-4
1.2.3.4 Container Carrying Capacity.......................................................................1-4
1.2.4 Environmental Protection Design.................................................................................1-6
1.2.5 Electrostatic Discharge Requirements..........................................................................1-6
1.2.6 Safety Requirements.....................................................................................................1-6
1.2.6.1 110V Version ..............................................................................................1-6
1.2.6.2 220V Version ..............................................................................................1-6
1.2.7 EMI Requirements........................................................................................................1-7
1.2.7.1 110V Version ..............................................................................................1-7
1.2.7.2 220V Voltage ..............................................................................................1-7
1.2.8 Acoustical Noise...........................................................................................................1-7
1.2.9 Reliability.....................................................................................................................1-7
1.2.10 Mechanical Design for TCO 99: ................................................................................1-7
1.3. Input/Output Specifications..........................................................................................................1-7
1.3.1 Input Signal Requirements ...........................................................................................1-7
1.3.1.1 Signal cable ................................................................................................1-7
1.3.1.2 Video signal.................................................................................................1-8
1.3.1.3 SYNC signal................................................................................................1-8
1.3.1.4 Timing.........................................................................................................1-8
1.3.1.5 Input signal Quality.....................................................................................1-9
1.3.2 Power Supply Requirements ........................................................................................1-9
1.3.2.1 Input Power Requirements..........................................................................1-9
1.3.2.2 Output Power Requirements........................................................................1-9
1.3.2.3 AC Power Inlet............................................................................................1-10
1.3.2.4 Power Cord..................................................................................................1-10
1.3.2.5 Power Management Function......................................................................1-10
1.3.3 CRT Requirements.......................................................................................................1-10
1.4. Functional Specifications .............................................................................................................1-10
1.4.1 Display Quality.............................................................................................................1-10
1.4.1.1 Display Date Area ......................................................................................1-10
1.4.1.2 Video AMP Performance............................................................................1-10
1.4.1.3 Light Output................................................................................................1-10
1.4.1.4 Contrast Adjustment Range: over 15db.......................................................1-10
1.4.1.5 Brightness Adjustment Range.....................................................................1-10
1.4.1.6 Linearity .....................................................................................................1-11
1.4.1.7 Geometric Distortion...................................................................................1-11
1.4.1.8 Size Stability................................................................................................1-11
1.4.1.9 Swing & Jitter..............................................................................................1-11
1.4.1.10 Focus ........................................................................................................1-11
1.4.1.11 DDC1/2B Table.........................................................................................1-12
1.4.1.12 USB...........................................................................................................1-16
1.4.2 Color Quality................................................................................................................1-17
1.4.2.1 Misconvergence...........................................................................................1-17
1.4.2.2 Moire...........................................................................................................1-17
1.4.2.3 Impurity.......................................................................................................1-17
1.4.2.4 White Balance .............................................................................................1-17

iv API Confidential
No Copy/Reproduction Allowed 7299sl Service Guide
1.4.2.5 Color Uniformity.........................................................................................1-18
1.4.2.6 Luminance Uniformity................................................................................1-18
1.4.2.7 Degaussing ..................................................................................................1-18
1.4.3 OSD Operation Procedure............................................................................................1-18
1.5.Physical Specifications..................................................................................................................1-20
1.5.1 Physical Dimension & Appearance..............................................................................1-20
1.5.1.1 Overall Dimension ......................................................................................1-20
1.5.1.2 Net weight...................................................................................................1-20
1.5.1.3 Outer Appearance........................................................................................1-20
1.5.2 Construction and Materials on outer surface................................................................1-20
1.5.3 Base & Swivel..............................................................................................................1-20
1.5.4 Marking & Labels.........................................................................................................1-20
1.5.4.1 Reference Label(Rear panel).......................................................................1-20
1.5.4.2 Controls & Connectors................................................................................1-20
1.5.5 Packing.........................................................................................................................1-20
1.5.5.1 Carton Dimension........................................................................................1-20
1.5.5.2 Shipping Weight..........................................................................................1-20
1.6. Maintainability Specifications......................................................................................................1-20
1.6.1 General & Requirements..............................................................................................1-20
1.6.1.1 Installation...................................................................................................1-20
1.6.1.2 Periodic Maintenance..................................................................................1-20
1.6.1.3 Repair & Calibration...................................................................................1-20
1.6.2 Mean Time to Repair....................................................................................................1-21
1.6.2.1 Module Level ..............................................................................................1-21
1.6.2.2 Component Level ........................................................................................1-21
1.6.3 Accessibility.................................................................................................................1-21
1.6.3.1 General........................................................................................................1-21
1.6.3.2 Outside Cabinet, access to the following elements......................................1-21
1.6.3.3 Cover Removal, Access...............................................................................1-21
1. 6.4 Equipment & Tools Required......................................................................................1-21
1.6.4.1 Standard Test Equipment ............................................................................1-21
1.6.4.2 Documentation ............................................................................................1-21
Fig.2 Pincushion Measurements..............................................................................1-22
2.CRICUIT OPERATION THEORY ...............................................................................................................2-1
2.1 Deflection CKT.............................................................................................................................2-1
2.1.1 99sl System Block Diagram.........................................................................................2-1
2.1.2 Deflection and HV generation circuit introduction ......................................................2-1
2.1.2.1 Deflection and HV generation circuit block diagram..................................2-1
2.1.2.2 99sl Function Block of Deflection & HV generation..................................2-2
2.1.3 Internal Function Block Diagram of The Autosync Deflection Controller TDA4856.2-4
2.1.4. 99sl Autosync Deflection Controller circuit................................................................2-5
2.1.5 99sl Vertical Output Circuit .........................................................................................2-5
2.1.6 99sl Spot killer and G1 circuit......................................................................................2-6
2.1.7 Tilt................................................................................................................................2-6
2.1.8 Horizontal Size Processing Circuit...............................................................................2-8
2.1.9 sawtooth waveform generator ......................................................................................2-8
2.1.10 East-west parabola driver...........................................................................................2-8
2.1.11 H-size PWM Converter..............................................................................................2-9
2.1.12 H-size output circuit...................................................................................................2-9
2.1.13 Top ringing eliminated circuit....................................................................................2-9
2.1.14 H driver circuit ...........................................................................................................2-9
2.1.15 Cs capacitor control circuit.........................................................................................2-9
2.1.16 H-linearity control circuit...........................................................................................2-11
2.1.17 H-center circuit...........................................................................................................2-11
2.1.18 Hor. spot protective circuit.........................................................................................2-11
2.1.19 High Voltage Processing Circuit................................................................................2-12
2.1.20 Sawtooth waveform generator....................................................................................2-12
2.1.21 High voltage feedback compensation circuit..............................................................2-13
2.1.22 High voltage output circuit.........................................................................................2-13
2.1.23 X-ray protective circuit...............................................................................................2-13
2.1.24 ABL circuit.................................................................................................................2-13
2.1.25 Dynamic Focus Circuit...............................................................................................2-13
2.1.26 Vertical focus circuit ..................................................................................................2-14

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No Copy/Reproduction Allowed v
2.1.27 Horizontal focus circuit..............................................................................................2-14
2.2 Microcontroller Cricuit Operation.................................................................................................2-14
2.2.1Introduction...................................................................................................................2-14
2.2.2 Block diagram ..............................................................................................................2-14
2.2.3 MCU and the peripheral circuit operation theory.......................................................................2-15
2.2.3.1 MCU function: ............................................................................................2-15
2.2.3.2 How to detect mode timing:........................................................................2-15
2.2.3.3 What are the valid key functions for user:...................................................2-16
2.2.3.4 How to memorize the timing and adjusted data:.........................................2-16
2.2.3.5 How to display the OSD menu:...................................................................2-16
2.2.3.6 How to execute the auto alignment function:..............................................2-16
2.2.3.7 Flowchart for Auto......................................................................................2-17
2.3 Switching Power Supply Operation Theory..................................................................................2-17
2.3.1. General Specification ..................................................................................................2-17
2.3.2. Block Diagram ............................................................................................................2-17
2.3.3. Circuit Operation Theorem..........................................................................................2-17
2.3.3.1 RFI FILTER................................................................................................2-17
2.3.3.2 Rectifier and filter .......................................................................................2-18
2.3.3.3 switching Element and isolation transformer..............................................2-18
2.3.3.4 Output Rectifier and filter ...........................................................................2-19
2.3.3.5 Control circuit..............................................................................................2-19
2.3.3.6 Feedback circuit ..........................................................................................2-20
2.3.3.7 DEGAUSS CIRCUIT..................................................................................2-20
2.3.3.8 power saving control...................................................................................2-20
2.4 Video Circuit.................................................................................................................................2-21
2.4.1. Design Specifications..................................................................................................2-21
2.4.1.1 input.............................................................................................................2-21
2.4.1.2 sync type......................................................................................................2-21
2.4.1.3 pixel rate......................................................................................................2-21
2.4.1.4 light output ..................................................................................................2-21
2.4.2 CRT Specifications.......................................................................................................2-21
2.4.2.1 heater voltage ..............................................................................................2-21
2.4.2.2 cathode spot cutoff voltage..........................................................................2-21
2.2.2.3 max-to- min cutoff ratio ..............................................................................2-21
2.4.3. Block Diagram ............................................................................................................2-22
2.5 Circuit Descriptions.......................................................................................................................2-22
2.5.1 Preamplifier [LM1282] ................................................................................................2-22
2.5.2 CRT Driver [LM2405].................................................................................................2-22
2.5.3 Buffer [Q111,Q131,Q151] ...........................................................................................2-22
2.5.4 DC Restoration.............................................................................................................2-25
3.ALIGNMENT PROCEDURE........................................................................................................................3-1
3.1Preparation for alignment :.............................................................................................................3-1
3.2 BAdjustment ...............................................................................................................................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...........................................................................................................................3-1
3.8 Convergence adjustment................................................................................................................3-2
3.9 Color Temperature auto alignment................................................................................................3-2
3.10 Clear all of user mode data..........................................................................................................3-2
3.11 Power Saving Function Check.....................................................................................................3-2
3.12 USB Test Procedure (Optional)...................................................................................................3-3
4.TROUBLE SHOOTING ................................................................................................................................3-1
4.1 Introduction:..................................................................................................................................4-1
4.2 Trouble shooting for short circuit:.................................................................................................4-2
4.3 Trouble shooting for bad geometry:..............................................................................................4-2
4.4 Trouble shooting for no picture:....................................................................................................4-3
4.5 Trouble Shooting for bad video:....................................................................................................4-4
4.6 Power supply.................................................................................................................................4-5
4.7 Check MCU and OSD for no video output: ..................................................................................4-6
4.8 Check OSD,MCU for no OSD window: .......................................................................................4-7

vi API Confidential
No Copy/Reproduction Allowed 7299sl Service Guide
Appendix A .........................................................................................................................................A-1

System Overview API Confidential
No Copy/Reproduction Allowed 1-1
Chapter 1
SYSTEM OVERVIEW
1.1 Introduction
This specification describes a low-cost high performance 19" color auto-scan monitor which will operate with
high-end 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
98k Hz horizontal frequency and from 50Hz to 160Hz 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 eyestrain. A
power management function has been designed to save power consumption and power management is
compliant with VESA & 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
-Auto range power supply
-0.26mm dot pitch CRT.
-User controls: Power switch, Auto Calibrating, Control keys.
-On screen control keys for user:
Enter key : enter sub-menus or select items
Exit key : Enter OSD or back to main menus (auto save), or leave OSD.
Left key : For left adjustment and enter contrast hot-key function.
Right key : For right adjustment and enter brightness hot-key function
-Power on/off indicator
-Power on auto degaussing
-20 seconds auto save function
-Total 20 modes for factory and user settings
-Tilt and swivel base
-Detachable power cable
-VGA resolution at 31.5kHz
640 X 400
640 X 480
-SVGA resolution: 800 X 600 from 34kHz to 54kHz
-UVGA resolution: 1024 X 768(non-interlaced) from 48KHz to 68KHz
-WS resolution : 1280 X 1024 (non-interlaced) from 64KHz to 98KHz
-VESA resolution : 1600 X 1200 (non-interlaced) at 81kHz
-Automatic scanning all horizontal frequencies from 30KHz to 98KHz,add all vertical
frequencies between 50Hz and 160Hz
-Power management function
-TCO
-DDC1/DDC2B
-USB optional
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

1-2 API Confidential
No Copy/Reproduction Allowed 7299sl Service Guide
-Non-operating condition / with packing
1.2.2 Transportation
1.2.2.1 Vibration Test (Package, Non-Operating)
A) Sine-wave Vibration
Frequency (Hz) Status
5 ~ 26.6 0.6G
26.6 ~ 50 0.016"
50 ~ 500 1.5G
* Duration : 104 Minutes / Per Axis (X,Y, and Z Axis )
-Total Test Time : 312 Minutes
B) Random Vibration
Frequency (Hz) Slope ( dB/Oct.) Spectrum Level (g2/Hz)
5 ~ 100 0 0.015
100 ~ 200 -6 ---
200 --- 0.0038
Equivalent to 1.47 Grms
* Duration : 30 Minutes / Per Axis (X,Y, and Z Axis )
-Total Test Time : 90 Minutes
1.2.2.2 Drop Test (with packing)
A) Drop Height
PKG. Gross Wt. Height (cm)
0 - 9 91
> 9 - 18.2 76
> 18.2 - 27.2 61
> 27.2 - 45.4 46
> 45.4 - 68.1 31
> 68.1 - 113.5 26
B) 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.

System Overview API Confidential
No Copy/Reproduction Allowed 1-3
1.2.3 Packing Configuration
1.2.3.1 Container Specification
1.2.3.1.1 Shipping Container
Container Type 20'*8'*8'6" Steel 40'*8'*8'6" Steel 40'*8'*9'6"
High Cube Steel
Gross 24,000 30,480 30,480
Weight(Kgw) Tare 2,370 4,000 4,200
Payload 21,630 26,480 26,280
Interior Measurement Length 5,898 12,031 12,031
(mm) Width 2,352 2,352 2,352
Height 2,394 2,394 2,699
Volume(Cubic Meter) 33.2 67.74 76.4
Door opening(mm) Width 2,340 2,340 2,340
Height 2,280 2,280 2,585
Useable Interior Dimension
(Duducted pallet(130mm
& Operating spce 50mm)
Length 5,890 12,000 12,000
Width 2,330 2,330 2,330
Height 2,100 2,100 2,405
1.2.3.1.2 Air Transport
Container Type Container (1) Container (2) Container (3)
125"*96"*96" 125"*96"*118" 125"*88"*64"
Gross 6,804 6,804 4,627
Weight(Kgw) Tare 129 129 129
Payload 6,675 6,675 4,498
Interior Measurement Length 3,048 3,048 3,048
(mm) Width 2,260 2,260 2,082
Height 2,438 2,997 1,625
Volume(Cubic Meter) 17 19 11
1.2.3.2 Carton Specification
Product Net 21.0
Weight(Kgw) Gross 25.1
Carton Interior Length 574
Measurement(mm) Width 545
Height 600

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No Copy/Reproduction Allowed 7299sl Service Guide
Carton External Length 594
Measurement(mm) Width 565
Height 632
1.2.3.3 Container Stowing & Carrying Specification
1.2.3.3.1 Dimension
Transport Type Pallet A Pallet B Pallet C
Shipping Pallet Length 990 X X
Dimension(mm) Width 1130 X X
Height 130 X X
Air Transport Pallet Length 990 X X
Dimension(mm) Width 1130 X X
Height 130 X X
1.2.3.4 Container Carrying Capacity
2.3.4.1 Shipping Container
Stowing Type Quantity of products
(sets) Quantity of Products (sets) Quantity of pallet (sets)
(Every container) (Every Pallet) (Every Container)
20' 96 Pallet A: 12 Pallet A: 8
Pallet B: X Pallet B: X
with pallet 40' 240 Pallet A: 12 Pallet A: 20
Pallet B: X Pallet B: X
20' 108 X X
XX
Without pallet 40' 240 X X
XX