Tektronix Option 10 Service Manual page 303

24x58124678 Options Service
I
REFER TO APPROPRIATE
OPTION SERVICE SECTION
I
RAM TEST FAILED.
CHECK U 4 8 1 1 AND
THE CIRCUITRY
DRIVING
m, m,
AND CS
YES
GPlB INTERFACE
FAILED. CHECK
U 4 8 1 8 AND IT'S
DRIVE CIRCUITRY
YES
2
POWER LATCH
FAILURE. CHECK
U48O 1, U4735D,
U47O 1, 4 4 7 4 5 ,
AND 4 4 7 4 3
YES
LATCH TEST
FAILURE. CHECK
U4625, U4626,
U4730, AND U 4 7 0 1
REPAIR
FAULT
ERROR MESSAGE
DIAGNOSTICS PROCEDURE