Kikusui TOS6200A, User Manual, Page: 133 / 154

TOS6200A/6210 Maintenance 7-5
7.6 In Case of Problems
The following problems do not necessarily indicate failures. Please make the fol-
lowing inspections before requesting repairs.
Symptom Check Item Chapter/section to be referred to
Page
number
The tester does not start
when the POWER
switch is pressed.
Check that the AC power code is con-
nected. 2.4, “Connecting the Test Leads” 2-5
Check that the fuse is blown. 7.3, “Checking and Replacing the Fuse” 7-3
The LCD screen does
not appear even when
the POWER switch is
pressed.
Make sure that the contrast adjustment
is correct. 4.4, “System Setup” 4-17
Make sure that ambient temperatures
are not below the recommended opera-
tional limits. 8.3, “General Specifications” 8-6
The keys on the front
panel do not work.
Make sure that the key lock function is
off. 4.8, “Key Lock” 4-32
Make sure that the tester is not being
controlled remotely via the GPIB or RS-
232C interface. LOCAL key 3-5
The START key does
not function.
Check that no stop signal is being input. Chapter 5 “REMOTE and SIGNAL I/O” 5-1
Check that the tester is not in PROTEC-
TION, PASS, or FAIL status. 4.10, “Protection Fuction” 4-36
Check that the tester is not in the midst
of system setup, interface setup, or pro-
gram editing.
Check that the tester is not currently
saving or recalling information from
panel memory.
Make sure that the double action func-
tion is off. “ON/OFF for Double Action” 4-19
Check that the "READY" indication is
displayed on the LCD.
Check that “OVER VOLT” is not blink-
ing in the upper right of the LCD. “OVER VOLT” in 4.9.1, “Setting Output
out of the Operation Range” 4-34
Check that “OVER VA” is not blinking
in the upper right of the LCD. “OVER VA” in 4.9.1, “Setting Output out of
the Operation Range” 4-34
Check that “OVER RESI” is not blink-
ing in the upper right of the LCD. “OVER RESI” in 4.9.1, “Setting Output
out of the Operation Range” 4-35
Check that “UP<= LOW” is not blink-
ing in the upper right of the LCD. 4.9.2, “Upper Reference Value <= Lower
Reference Value (UP <= LOW) ” 4-35
The fan does not run. The fan adjusts its rotational rate
depending on the tester's internal tem-
peratures; if the internal temperatures
are sufficiently low, the fan will not run.
If "OVER HEAT" appears on the LCD
and the fan is not running, the tester is
defective.