Troubleshooting - Philips M3921A Service Manual

Troubleshooting

Troubleshooting
128
Service personnel concerned with troubleshooting should review the
following topics in this manual:
• Error Codes (see Chapter 5)
• Boot Sequence (see Chapter 3)
• Performance verification (see Chapter 3)
This is intended to be a practical, hands-on part of the training program. If
possible, therefore, use a monitor to help you learn about troubleshooting the
monitor.
When faced with a call regarding the monitor, there are some simple steps that
are recommended to solve the failures described below
account for the majority of known failure modes.
Nature of Problem
1. The alarm will not silence.
2 Power related problems.
3 Problems not related to
power, and the customer is
willing to loose patient data
and settings.
These failures
.
Recommended Action
Ensure the external power supply on the A1 or
the power cord on the A3 is plugged into AC
power.
Step 1: Ensure the external power supply on
the A1 or the power cord on the A3 is
plugged into AC power.
Step 2: If the problem persists, follow the
troubleshooting table in Chapter 5.
Reset all settings to factory presets. This will
reinitialize all hardware and software
components. The following instructions work for
both the A1 and A3:
Step 1: With the monitor powered off,
simultaneously press the Volume and
Contrast buttons on the front keypad.
Step 2: While continuing to press the Volume
and Contrast buttons, power on the
monitor.
Step 3: Continue to keep the Volume and
Contrast buttons pressed until the
power-up diagnostic sequence is
complete. When the normal monitoring
screen appears, release the two
buttons.
Chapter 10 - Training Program