GYS BT 551, Translation Of The Original Instructions, Page: 10 / 32

Results found Screen display
Analysis
Normal undulation intensity
VOLTAGE REDR OK
xx.xx V NORMAL
OR
VOLTAGE ADJUST DEF
The diodes are working in the
alternator/starter
High undulation intensity
VOLTAGE REDR OK
xx.xx V HIGH
One or more diodes do not
do not work or are damaged. Make
sure that the alternator support is
properly positioned and that the timing
belts are working properly. If so,
replace the alternator.
8. Continue the test by pressing «ENTER». The tester now analyzes the starting voltage with the vehicle consumers
running.
• Result of the load system test with consumers running
Examples Results displayed Analysis
High starting voltage when the test is
performed with the consumers running
VOLTAGE ALTERNA
xx.xx V HIGH
The alternator output voltage is abnormally high.
Check that there are no connection problems. If
not, replace the alternator.
Normal starting voltage when the
test is performed with the consumers
running
VOLTAGE ALTERNA
xx.xx V NORMAL
The alternator output voltage is
normal. No problem detected.
Low starting voltage when
the test is performed with the consu -
mers running
VOLTAGE ALTERNA
xx.xx V LOW
The alternator does not provide enough current
for charging the electrical system and the battery.
Check the belts, and ensure that the alternator is
running when the engine is on. If the belts slip or
are broken, replace them and re-test. Check the
connection between the alternator and the battery.
If the connection is bad, clean or replace the cable
and re-test. If the belts and connection are in good
condition, replace the alternator.
6. The test provides a printout of the test results of the alternator charging system. Press «ENTER» to start printing.
PAPER REPLACEMENT
A. Open the transparent cover. B. Place a new roll of paper in the
compartment.
C. Place a small length of paper
from the compartment and
press the transparent cover
to close.
MAINTENANCE
Examples Analysis
Display switched off
Check that the device is connected to the battery. The battery voltage is not high
enough to perform the test (<1.0 V). Fully recharge the battery and try again.
Printing fault
Paper jam: the paper is not inserted correctly.
Out of print paper: Insert paper.
Insufficient internal battery Replace the batteries in the tester.
10
BT 551
EN
Translation of the original instructions