Yamaha UMAX Service Manual page 16

NOTICE
Handle electrical components with special
care, and do not subject them to strong
shocks.
NOTICE
Electrical components are very sensitive to
and can be damaged by static electricity.
Therefore, never touch the terminals and be
sure to keep the contacts clean.
TIP
When resetting the ECU or MCU by turning the
main switch to "OFF", be sure to wait approxi-
mately 5 seconds before turning the main switch
back to "ON".
BASIC SERVICE INFORMATION
OFF
ON
Checking the electrical system
TIP
Before checking the electrical system, make
sure that the battery voltage is at least 12 V
(YUM1A/YUM2A) or 6V (YUM2E).
NOTICE
Never insert the tester probes into the cou-
pler terminal slots. Always insert the probes
from the opposite end "a" of the coupler, tak-
ing care not to loosen or damage the leads.
NOTICE
For waterproof couplers, never insert the
tester probes directly into the coupler. When
performing any checks using a waterproof
coupler, use the specified test harness or a
suitable commercially available test har-
ness.
1-7
OFF
ON
OFF
ON
a