Compaq MV-920 User Manual

5 Troubleshooting
5-8 PG17**/PG19**/PG21**
IC101 (17”: IC104, Pin12) Pin 15
input exists and
varies with different patterns?
Check and replace IC101
(17”:IC104)
.
Input full white pattern to monitor.
No
Yes
T501 Pin 8 output exists?
Check and replace T501.
Yes
No
IC103 (17”: IC04) Pin 16 output
exists and varies with different
patterns?
Check and replace IC103 (17”: IC04).
Yes
No
Check and replace Q101,
Q102 and +12 V line.
Check CN102.
5-1-14 ABL Failure
5-1-15 Dynamic Focus Failure
IC261 Pins 18 and 15 output
are right?
Check and replace IC261.
Yes
No
Some parts around Q551,
Q552, Q553 and Q554 are right?
Replace failed part.
Yes
No
Some parts around T502 are right?
Replace failed part.
Check the connection between FBT
Pin 13, CRT Socket PCB.
Yes
No
13
14
13
2.20 V (IC251, #15)
CH1 P-P = 2.20 V CH1 RMS = 2.776 V
14
580 V (T551, #1)
CH1 P-P = 580 V CH1 RMS = 278.2 V
WAVEFORMS

Compaq MV-920 Specifications

General

Brand	Compaq
Model	MV-920
Category	Monitor
Language	English