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Maintenance and Service Guide
M27h model
N28341
M24h model
N28338

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Summarization of Contents

Getting started
Important safety information
Cautions and notes to minimize risk of personal injury during service.
Important service information and precautions
Precautions for professional service technicians, high voltage areas, and soldering.
ERP Lot5 requirement
Requirements for professional repairers regarding technical competence and insurance.
RoHS requirements
Legal requirement for hazardous substances in electronics, applied to products launched after June 2006.
General descriptions
General information about the manual and service levels.
Firmware updates
Information on obtaining firmware updates for the monitor.
Returning the repaired product
AC leakage current check and safety before returning the product to the customer.
Monitor features
Monitor specifications
Overview of monitor specifications like screen size, resolution, display technology, and inputs.
How to order parts
Connector part numbers
Part numbers and specifications for HDMI and VGA connectors from different manufacturers.
Removal and replacement procedures
Preparation for disassembly
Steps and materials required to properly prepare for monitor disassembly.
Rear Cover removal
Steps to follow before and during the removal of the monitor's rear cover.
Step 1 Quick release Base stand
Instructions for detaching the monitor base stand using screws.
Step 2 Back cover screws
Removing screws to open the monitor's back cover.
Step 3 FFC and rear cover removal
Detaching the 8-pin FFC and removing the rear cover.
Step 4 LVDS/LED cable tape
Removing acetate tape from the LVDS/LED cable.
Step 5 LVDS/LED cable to panel
Pulling out the LVDS/LED cable connected to the monitor panel.
Step 6 Bracket and mainboard screws
Removing screws securing the bracket and mainboard.
Step 7 Middle frame screws
Removing 10 screws from the monitor's middle frame.
Connector repair
M24h HDMI and VGA connectors
Identifies HDMI (P200) and VGA (P100) connectors on the M24h main board.
M27h HDMI and VGA connectors
Identifies HDMI (P200/P300) and VGA (P100) connectors on the M27h main board.
Repairing HDMI connector P200/P300
Procedures for removing and melting solder from HDMI connector pins using tools.
Function test
Function test procedures
Confirms all functions are working after repair using specific tests.
Support and troubleshooting
Solving common problems
Lists common problems, their causes, and recommended solutions for monitor issues.

Table of Contents