Troubleshooting Procedures - SATO M84PRO Service Manual

Section 6: Troubleshooting
POWER LED NOT ILLUMINATED
Main power fuse defective.
Defective power supply.
ERROR LED ILLUMINATED
Print head not latched into position.
LABEL LED IS ILLUMINATED
Label supply roll is empty.
Label stock is not routed through sensor. Ensure label roll is correctly installed.
Label sensor incorrectly positioned.
Label sensor is blocked.
Incorrect label sensor threshold setting.
Platen drive malfunction.
RIBBON LED ILLUMINATED
Ribbon supply roll is empty.
Ribbon supply is misaligned.
Ribbon sensor is blocked.
Ribbon rewind is without core.

TROUBLESHOOTING PROCEDURES

The procedures below provide in depth instructions on symptom analysis of specific
components. If it is suspected that the problem lies within one of these components, refer to the
relative instructions.
RS232 S I
ERIAL NTERFACE
• Ensure the serial cable is thoroughly connected to the PC and the printer.
CAUTION: NEVER CONNECT OR DISCONNECT INTERFACE CABLES
(OR USE A SWITCH BOX) WITH POWER APPLIED TO EITHER THE
PRINTER OR THE HOST. THIS MAY CAUSE DAMAGE TO THE INTER-
FACE CIRCUITRY AND IS NOT COVERED BY WARRANTY.
• Ensure the serial cable is not defective. The minimum requirements is that a Null Modem
Cable or correct Pin Outs be used and that it be manufactured to specifications. Refer to the
Interface Specifications section of this manual.
• Ensure the RS232 Interface Module is installed. Different module types will have an impact
on transmission speed.
• Ensure the data stream is correct, all letters of command codes are in upper case, and with-
out spaces. Carriage Returns are also not acceptable in line fields.
M84Pro Service Manual
Replace fuse.
Test with meter and replace as required.
Ensure print head assembly is latched.
Replenish label supply.
Adjust sensor position.
Clean label sensor.
Adjust label sensor threshold.
Perform drive train analysis.
Replenish ribbon supply.
Realign ribbon sensor.
Clean ribbon sensor.
Install cardboard core.
PN 9001111A Page 6-4