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Service Hints & Tips

Document ID: GSMH-39DEAU

This document is provided to IBM and our Business Partners to help sell and/or service IBM products. It is not to be distributed beyond that audience or used for any other purpose.

Service tips for Multi-Sync Monitors

Applicable to: World-Wide

Service Tips for Multi-Sync Monitors:
If you have not read the safety notices in the service HMM you are not authorized to remove monitor covers. This publication should not be usedby anyone other than IBM authorized, trained and approved servicers.

Quick reference
The following problems are discussed:
Screen flicker
Power Management (Screen blanking)
Damage to CRT when servicing
"DAMAGE" to Card Tray During Replacement 6324/25, 9524/25
Power Button Failure 6324/25, 9524/25
6325,9525 Line in Middle of Monitor
Flash/Picture collapse and arcing.
6324, 6325, 9524, 9525 Boots into 40 Column Mode.
632X/952X Front Control Panel Does Not Function
Monitor "Self test raster"
Physical damage to Connector Pins
Monitor Chirp Sound
Broken Covers on NEW product
6324/25 & 9524/25 External Focus Adjustment Locations
9527 Image Shifts when Connected to a 3483 or 3488.
Monitor screen Tilt
Adjustment Potentiometers "NOT" accessible
Front Cover Latch Broken
Front Cover Hinges Broken.
Cannot Reset Image to Factory Preset.
IBM Logo Missing.
Monitor Noise During Initial Power-on
Monitor Rear Cover Delatching Tools
PS/2 Monitor Odors
Touch Monitors Different ITC's (Etched and Polished)

Screen flicker:
Multi-sync means that the monitor tunes itself into the system signal. The source of screen flicker can be the output from the system.
The most common mode is (640X480 at 60Hz refresh rate), but it is the refresh rate that determines flicker. Systems and software applications can be set for refresh rates lower than this, and will give poorer screen quality. To run flicker free the refresh rate must be higher than 70 Hz, and the monitor has been designed for this.
Older systems are unlikely to be able to support the higher refresh rates without a video adapter card. It is important to set the system or video adapter signal to the highest refresh mode that is supported by both, system, and monitor, to achieve the best front of screen performance. You can change the signal by changing the system drivers. These are supplied with your system or video adapter card. Advice on drivers can be obtained from your Local IBM Support Centre.

Power Management (Screen blanking):
Power management is a new feature on our multi-sync monitors. This capability, like flicker free, is system dependant.
The feature can be demonstrated by leaving the monitor on, and switching off the system. If the monitor is connected to a system, but is not receiving a signal, the screen will blank and the LED will flash, indicating it has moved into a stage of power management.
There are three stages of power management. The first stage blanks off the screen, second stage switches off scan, and third switches of the power supply. 952X has all 3 stages but 632X only has stages 1 and 2. Models 6312, 63214, 6317, an 6319 do not have power mangement. On models 6327, and 9521, any keyboard or mouse activity reactivates the monitor out of the first 2 stages. If these monitors move into the 3rd stage of power management they must be powered off to reactivate. On models 6324, 6325, 9524, 9525, and 9527, any keyboard or mouse activity reactivates the monitor out of any of the 3 stages. In order for power management to function correctly, the monitor must incorporate power management capabilities, the system video adapter must be able to generate the correct signal, and the operating drivers (DOS/Windows/OS2) have to be available and installed. (See HMM S71G-4197-02 Page 1-15, for greater detail of this feature.)

Damage to CRT when servicing:
With the video card resting on the analogue card, excessive strain is placed on the neck of the CRT causing it to break. The end of the CRT is its weakest point, and the greatest of care must be taken when handling CRTs.
Note: Do not lift a monitor when covers are removed.

6324/25 & 9524/25 "DAMAGE" to Card Tray During Replacement:
With the covers removed the video card and the analogue card come in contact. Power must NOT be supplied in this condition or shorting occurs. Place insulator between the cards as described in the service HMM. Non-conductive material is defined as brown cardboard, a book, or screwdriver handle. Do NOT use pink foam from the box or an ESD mat, these are conductive. (See note on Page 2-24 of HMM S71G-4197-02)
Ensure that the "G2" pot is turned down counter clockwise (CCW) before powering on. A "CLOCKWISE" adjustment of "G2" control will be necessary to see the raster in self-test. Failure to connect the ITC yoke to the analogue may result in CRT damage by removing a spot of phosphor coating from the screen. If this occurs the ITC must be replaced. (See note on Page 2-11 of HMM S71G-4197-02.)

6324/25 & 9524/25 Power Button Failure:
Monitor intermittently powers off, and power button will not function normally (monitor will power on while button is held in, but powers off when you let go of the button), or if the switch will not engage and power up. Remove the rear cover, and actuate the power switch on the Analog Card manually. If the monitor power switch operates normally, only replace the Push-Button and Push-Rod which are contained in the Small Parts Kit (P/N 39G6281). If button and push rod are the problem; REPLACING THE CARD TRAY ASSEMBLY MAY NOT RESOLVE THIS FAULT.Also check that the push rod is not dragging on the degauss coil. This can happen if the coil has been wrongly fitted at manufacture.If the power switch on the card does not function, replace the analogue card.

325,9525 Line in Middle of Monitor:
Card failures are occuring to the Z302 component on the analogue card. These are caused by voltage tracking from the CRT neck clamp to the card. To resolve this the 6325, and 9525 card FRUs now to include a ground strap, and install instructions. If this is not in the FRU supplied to you, the following parts are required.
Wire Asm p/n 72G7396 (1-off) Straps p/n 5420242 (2-off) Instruction p/n 73G0683
The strap must be fitted to 15 inch monitors or failure can reoccur.

Screen Flash/Picture collapse and arcing:
This is caused by voltage tracking from the CRT neck clamp to the card, on 15 ins monitors. It is an early symtom of Z302 failure described in the previous fault. To prevent arcing, install ground strap described in service tip "Line in middle of monitor".

6324, 6325, 9524, 9525 Boots into 40 Column Mode:
When replacing a card assembly, check the level of microprocessor. Do not install if you have any of the levels listed below.
If Multisync monitors power up in 40x25 character video mode instead of the expected 80x25 follow these instructions.
An interim fix is to advise the customer not to switch on the monitor until the system has booted up, as suggested in the users manual. This may be acceptable to some customers, but it is not the correct technical solution.To check fault, switch off monitor, wait 5 secs and power on again. The monitor will now appear correct. If not, try switching off the monitor and system, switch on the system only, wait until the system has booted up, then switch on monitor.If screen appears correct, follow the solution below. If there is no change, follow the normal fault process described in the HMM.Check the microprocessor level on the analogue card, found at the rear of the monitor under the video card and is approximately 3 X 3/4 inches long. The level is on the top line of print found on the microprocessor. If it is one of the following levels,it is NOT compatible with the valuepoint system : XC86201B XC86202B XC86203B XC86204B XC86205B. All levels above this are compatible.

Two microprocessor FRUs are now available to resolve this. Installation instructions will come with the FRUs.
6324, 9524 order FRU p/n 73G0685
6325, 9525 order FRU p/n 73G0686

632X/952X Front Control Panel Does Not Function:
If the front control panel does not function properly remove the rear cover. The ribbon cable that connects the control panel to the analog e card is locked into the connector, and must be released before the ribbon cable is detached. Pull the top of the connector towards the ribbon to release, check for damage, if none, replace and ensure that the ribbon is fitted square to the connector so that all contacts are made, close connector and check panel. If the problem persists, replace the Card Tray Assembly.With the exception of 9527, where the control panel is part of the power/control switch FRU, the front cover should be ordered. The control panel is bonded to the front cover, and should not be removed. Refer to HMM S71G-4197-02, and order the front cover for the model type you require, or power control switch for 9527.

Monitor "Self test rasters":
If the monitor has a self test raster further problem determination is possible. Check the list below for product you are working on.
6312 - White self test raster. 6314 - No test raster, but has an alternative test method. 6317 - No self test raster. 6319 - No test raster, but has an alternative test method. 6321 - White self test raster 6322 - White self test raster 6324 - White self test raster 6325 - White self test raster 6327 - White self test raster 9521 - White self test raster. (See note **) 9524 - White self test raster 9525 - White self test raster 9527 - White self test raster. (See note **)

Note ** :- On this model the raster does not appear automatically. Press the contrast and brightness "UP" buttons together, on the customer control panel, and the raster will appear.

White self test raster
To access the self test raster :
1. Power-off the system unit and monitor.
2. Disconnect the monitor signal cable.
3. Power-on ONLY the monitor.

The white self test raster confirms the following if white/off white :-
1. Power supply 2. Scan 3. Green/Blue/Red guns are working

A white screen indicates that all guns are firing. If one gun is not firing there will be a definite color caused by green/blue, green/red, or blue/red color mix.
Self test raster does NOT confirm the following as faults :-
1. Flicker - screen is free running and will flicker. 2. Geometry - edges of raster may bend. You cannot adjust in self test. 3. Color balance - Cannot be adjusted is self test.

6314/19 Alternative self test
Follow these instructions for self-test on 6314 and 6319:
1. Power-off the system unit and monitor.
2. Disconnect the monitor signal cable.
3. Power-on the monitor.
4. The monitor should be blank (black) and the light emitting diodes on the digital control box should flash in sequence from left to right, looping continuously.
If the self-test fails, replace the monitor.
If the self-test passes, continue problem determination.

Physical damage to Connector Pins:
If your monitor passes self test raster successfully, but fails with a blank screen, or other visual failure, the cause of the defect may be a pushed or bent pin within the signal cable connector. The pin may be pushed back far enough that it cannot be observed. Examine the cable end(s) carefully for pushed pins. Care should be used when connecting PS/2 and PS/Valuepoint monitors or displays to host system. Bent or pushed pins have been the cause of many failures.
Bent pins, if found, may be carefully straightened. It is IMPORTANT to remember that some pins are intentionally removed from the plug. If there are pins missing you should not assume this is a fault.If normal PD does not resolve the problem consider replacing the signal cable. FRU part numbers can be found is the HMM S71G-4197-02. Page reference will depend on model type; see HMM.
Monitors 6314, 6319, 8511, 8513, 8515, 8516, 8517, 8518, 9515, 9517, 9518, 632X, and 952X all have replaceable signal cables. (see HMM S71G-4197-02, and refer to the model for parts list.)

Monitor Chirp Sound:
If the Monitor makes a "chirp" sound when powered on, it is evidence that the power supply is tripping out.Follow the problem determination process in the HMM to isolate fault.(service publication HMM S71G-4197-02, and refer to the model you are working on.)

Broken Covers on NEW product:
If the customer has received a NEW monitor which has broken covers,the marketing representative should be engaged to determine if :
a. I BM can provide a Expedite Replacement
b. Customer can exercise his 30 Day Money Back return guarantee.
Alteranative is for service to follow the IBM mechanical replacement procedures (MRP).

6324/25 & 9524/25 Focus Adjustment Locations:
The Focus adjustment on the 14" and 15" monitors have a small hole in left side of the rear cover to facilitate the adjustment without removal of the rear cover. The 17" and 21" monitors will require the rear cover be removed to adjust focus.There is no safety exposure. A metal bladed screw driver can be used.

9527 Image Shifts when Connected to a 3483 or 3488:
A 9527 monitor when connected to a 3483 or a 3488 system may experience some degree of picture shift. This will result in the image appearing offset to the left or vertically, in modes 2, 3 or 4.This problem is limited to monitors manufactured with signal cable p/n 68G2543. Monitors manufactured after 20th Dec 93 have the new signal cable p/n 73G0892. The external appearance of the cables are the same and cannot be differentiated.
There is also a design limitation in mode 5, as customers might experience delay before it appears, or it might mot appear at all. This is a design limitation and has no fix.The cable is specifically to support 3483 and 3488, and supplies id bits. Adapter cable P/n 73G0893 has been released to support down level monitors with signal cables p/n 68G2543. Advise marketing representative that the customer has not been given the correct configuration for his system. This is not design defect, but a compatibility limitation, as both levels of cable work with PS/2 and valuepoint systems.

Monitor screen Tilt:
With the introduction of borderless operation, on the new range of monitors, customers are more aware of the relationship of the picture to the edge of the cover bezel, this described as tilt. Check customer keypad, some monitors have tilt or rotational adjustement. If this is not present, you will be unable to fix this from the customer control panel.Although manufacturing set this to specification, the earths magnetic field can cause slight deviations, and this should be explained to the customer.If the customer is not satisifed with this explanation, and action is require, there is limited turning movement available on the ITC mounting. This should not be attempted by an untrained operator. DO NOT REMOVE, but loosen 4 screws securing the ITC to bezel, and turn the ITC to eliminate tilt. Ideally the adjustment should be made on the customers desk, in the normal operating mode. Turning the monitor 90 degrees on the desk may be enough to cause a magnetic shift.

Adjustment Potentiometers "NOT" accessible:
The Card Tray Assembly potentiometer holes may not line up with holes in the FCC shield Full Metal Jacket (FMJ), after replacing Card Tray. Order a new FCC Shield (FMJ). The holes in Card Tray to mount FMJ are not threaded, and do not have self-tapping screws. You may elect to force them into the new card tray and they should screw into the new tray.

Front Cover Latch Broken:
For 14 inch and 15 inch monitors this part is contained in the small parts kit p/n 39G6281.

Front Cover Hinges Broken:.
Replace door if door hinge is broken, otherwise replace front cover.Remember to record Machine Type and Serial Number on the front door if this is removed when you replace the door.

Cannot Reset Image to Factory Preset:
There is not a factory preset for the mode they are working in.

IBM Logo Missing:
If new monitor, contact your support center. If you just replaced the front cover, remove the logo from the old cover and install on the new cover.

New rear covers do not have identification sticker on them, and it is impossible to remove these intact. If the customer raises issue with this see instruction for "Broken covers on NEW products"It is illegal to apply certification labels in the field. UL and other approval agencies insist labels be applied only in a manufacturing plant.

Monitor Noise During Initial Power-on:
Degauss can cause customers to jump when the monitor is first powered on. This part of the monitor design and is not a defect.

Monitors, when first powered on, require time to synchronize with the video adapter or circuitry provided on the system. During the initial power-on spurious patterns or characters may be displayed on the screen and static sounds may also be heard.Larger monitors will often power-on with a distinctive "power-on hum." some models also use mechanical relays to change video modes. These relays will generate a clicking noise. This is normal operation. If self-test and diagnostics run error-free, no failure has occurred and no parts should be replaced.

Monitor Rear Cover Delatching Tools:
A new rear cover delatching tool, FRU P/N 68G1457 has been made available for monitors such as the 632X and 952X. IMPERATIVE that "ONLY" the new tool be used to open the new design of cover latch. Use of screw drivers or similar, will result in damage to the front cover, and will necessitate front cover replacement. In cases the damage to the latch has resulted in the inability to remove covers.The tool has been made of plastic to avoid cover damage, but damage can occur if the tool is twisted to pry covers apart.If the cover is stiff, a sharp tap with the palm of the hand, on the back edge of the cover, will assist delatch.

The original tool, FRU P/N 59X6319 is still available and may be ordered if required, however it only works on early model covers. The new tool was identified in the HMM Vol.2 S71G-4197-02.

Monitor Odors:
Some odours are common to most electronic equipment and generally come come from the circuit boards and plastics used. These odours are usually more noticeable when the equipment is new, but none of the odours in IBM equipment are present in quantities that exceed any regulatory or consensus standards.
All IBM monitors have been tested and approved for materials toxicity. There is no known health exposure the customer.

Ventilation:
To avoid customer concern, you should recommend to your customers that new electronic equipment be used only in a well ventilated areas. For office environments, the American Society of Heating, Refrigerating and Air-Conditioning (ASHRAE), in its standard 62-1989, recommends that indoor air contain a minimum of 20 cubic feet of outdoor air per person, per minute. Other environments may require a different amount of outdoor air per person.

Touch Monitors Different ITC's (Etched and Polished):
There are two different Models of Touch Screen Monitors. Model T01 has an "ETCHED SCREEN" which reduces glare; Model T21 uses a "POLISHED" screen which eliminates a moire effect. The customer has selected the model of their preference. It is imperative that the correct ITC FRU is ordered from the service HMM.If the customer is unhappy with the performance of front of screen, marketing should be advised. Under no circumstances should the T01 ITC be replaced by T21, or vice versa.(See supplement HMM S82G-5414-00).

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	Hint Category	General Information
	Date Created	19-04-94
	Last Updated	20-01-99
	Revision Date	20-01-2000
	Brand	IBM Monitors
	Product Family	Size labeled (14R/15V/etc.), Terminals
	Machine Type	63xx, 95xx, Various, 3483, 3488
	Model	Various
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