Chapter 4. Diagnostics; Overview; Power-Up Diagnostics; Ram Test - Monarch 9460 Service Manual

CHAPTER 4. DIAGNOSTICS

OVERVIEW

The 9460 printer has a diagnostics utility in flash
memory when it is shipped from the factory. It tests
the capabilities, features, and functions (hardware and
software) of the printer. Customers can use it before
calling Service to obtain diagnostics data that gives an
indication of the problem. Service personnel can also
use it for other tests.
Use diagnostics to
•
determine printer configuration.
•
perform hardware tests.
•
perform service diagnostics.
There is also a Diagnostics Utility (only available to
Service Technicians), which is part of the MPCL
Toolbox.

POWER-UP DIAGNOSTICS

The M09460 performs a power-on self-test before
entering normal operation. This test includes, but is
not restricted to, a RAM test, printhead test, and

battery check.

RAM Test

The RAM test consists of four loops of writing to
memory. Loop one writes a 0x00 pattern to all of
RAM. Loop two verifies the 0x00 pattern while writing
a 0x55 pattern. Loop three verifies the 0x55 pattern
while writing a 0xAA pattern. Loop four verifies the
0xAA pattern while writing 0xFF to clear RAM for
power-up.
Error 900 occurs if this test fails, and the printer will no
longer respond to communications or keypad entry.

Printhead Test

Checks the individual dot element resistance and the
average resistance. If any individual dots test out of
the allowable range, they will be marked as bad. If
more than 10 dots are bad, error 768 occurs. The
user can clear the error, but they cannot print. If 10 or
fewer dots are bad, no error occurs.
If a bar code cannot be positioned correctly for
printing, error 616 occurs.
January 2001
Confidential
Battery Check
If the battery voltage is less than 7.3 volts, a low
battery indication will be displayed causing no printer
operation until the battery is recharged.

USER DIAGNOSTICS

Table 4-1. 9460 Printer Menu Structure.

Main Menu Sub Menu
Diagnostics
Printer
Display
Keyboard
Comm.
RAM
About
Exit
Online Diag
Enable
Disable
Exit
Continued on the next page
Sub Menu Sub Menu
Test Label Diag Label
Test Pattern
Grey Scale
Exit
Sensors Black Mark
Die Cut
On-Demand
Exit
Printhead Dot Test
Dot Resist.
Temperature
Exit
Battery
View Totals Print Inch
Service Inch
Prt High In.
Ser High In.
Exit
Exit
Backlight
Pixel
Exit
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