ConMed sabre 180, Service Manual

Page: 71 / 72

A-1
APPENDIX A
HLP CODES AND POSSIBLE CAUSES
See Section 4.5.1 and 3.5.1 for explanation:
Meaning (dependent
HLP on when performed
Code as noted) When Performed Possible Causes
1 Read/Write ability Initialization -Faulty A3U3(8031)
of 8031 internal and operation
memory is impaired.
2 Program memory CRC Initialization -Faulty A3U1 (27C64)
check error. and operation -Faulty A3U3 (8031)
-Open or shorted Address, Control,
or Data bus lines.
3 Calibration memory Initialization -Calibration incomplete when
CRC check error. and operation exited CAL mode.
-Faulty A3U2 (X2001)
-Faulty A3U3 (8031)
-Open or shorted address, control, or
data bus lines.
-Faulty A3U6 (74LS00) or A3U8
(74LS32)
4 Watchdog Timer Initialization -WDT timing parts incorrect
pulse width is -Microprocessor frequency incorrect
incorrect -Faulty A3U7 (4538)
-Faulty A3U3 (8031)
-Faulty A3U6 (74LS00)
-Faulty A3U10 (74LS00)
4 Watchdog Timer Operation -Faulty A3U3 (8031)
detected WDTSTB -Faulty A3U1 (27C64)
outside of timing -Processor 10 Mhz clock frequency
window. incorrect
5 RF PA supply current Initialization -Incorrect base or gate drive
is out of range for test -Shorted PA power transistor
drive setting. -A4D2 or RV1 shorted
-A3J5 or A4P3 disconnected
-IFAIL or VSENSE circuits faulty
-Open fuses(s) or transistor(s) in PA
-Bipolar relay stuck closed
5 RF PA supply current Operation -Incorrect base or gate drive
is too high for power -Shorted PA power transistor
setting. -A4D2 or RV1 shorted
-VSENSE circuit faulty (cut modes)
-Bipolar relay stuck closed