GE Vivid S5 N, Service Manual

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GE
P
ART
N
UMBER
FN091065, R
EVISION
2 VS5 N
AND
VS6 N
S
ERVICE
M
ANUAL
Chapter 7 - Diagnostics/Troubleshooting 7-15
P R E L I M I N A R Y
• Pencil Test
- Pencil Rx Test
When performing the Pencil Rx Test, no probes or jig are connected to the system.
This test is performed to check the receive functions. During this test, signals are transmitted
through the circuitry. The received frequency should match the transmitted test frequency, as
shown in the Test report.
For test procedure instructions, see 7-4-6-2-7 "Pencil Rx Test" on page 7-87 .
7-2-4-3 Monitoring Tests
7-2-4-3-1 Full System Monitoring Test
The Full System Monitoring Test performs a full sequence of all monitoring tests (as described below).
For test procedure instructions, see 7-5-1-1 "Full System Monitoring Test" on page 7-90 .
7-2-4-3-2 Fixed Voltages Test
The Fixed Voltages Test is used to check the Power Supply unit and to ensure that voltages are within
the pre-defined limits.
For test procedure instructions, see 7-5-1-2 "Fixed Voltages Test" on page 7-97 .
7-2-4-3-3 Temperatures Test
The Temperatures Test is used to check the temperature of the Front End and the Back End. The test
reads all the temperature sensors in the system to ensure that the system is operating within the
pre-defined temperature limits and that there is no overheating of any components.
For test procedure instructions, see 7-5-1-3 "Temperatures Test" on page 7-100 .
7-2-4-3-4 Fans Speed Test
The Fans Speed Monitoring Test is used to check that the Fan Controller is fully operational and that
both fans operate simultaneously (at the pre-defined speed) to maintain proper cooling and the optimum
operating temperature of all system components.
For test procedure instructions, see 7-5-1-4 "Fans Speed Test" on page 7-103 .
7-2-4-3-5 Fans Speed Setting Test
The Fans Speed Setting Test is used to check that the Fan Controller is fully operational (in three
modes:
stop; mid-speed; max speed ) and that both fans operate simultaneously (at the pre-defined
speed) to maintain proper cooling and the optimum operating temperature of all system components.
For test procedure instructions, see 7-5-1-5 "Fans Speed Setting Test" on page 7-105 .