ii TC9830SM Rev. B 7/98 Confidential
FEED ASSEMBLY------------------------------------------------------------------------------------------------------------------11
Platen Module------------------------------------------------------------------------------------------------------------------11
24VDC Stepper Motor -------------------------------------------------------------------------------------------------------11
Lower Supply Guide and Bi-Cell Sensor-------------------------------------------------------------------------------- 11
Printhead Latch---------------------------------------------------------------------------------------------------------------- 11
Functional Description---------------------------------------------------------------------------------------------------------- 11
Printhead Locking------------------------------------------------------------------------------------------------------------- 12
SUPPLY HOLDER ASSEMBLY-------------------------------------------------------------------------------------------------12
Functional Description---------------------------------------------------------------------------------------------------------- 12
CONTROL PANEL ASSEMBLY-------------------------------------------------------------------------------------------------12
Functional Description---------------------------------------------------------------------------------------------------------- 12
CHAPTER 3 TROUBLESHOOTING------------------------------------------------------------------- 13
PRELIMINARY CHECK----------------------------------------------------------------------------------------------------------- 13
ANALYZING FAILURE DURING POWER UP ------------------------------------------------------------------------------13
EVALUATION OF A 616 ERROR (DOT SHIFTING FAILED)----------------------------------------------------------- 13
EVALUATION OF A 704 ERROR (OUT OF SUPPLY)--------------------------------------------------------------------13
EVALUATION OF A 754 ERROR (OUT OF RIBBON)--------------------------------------------------------------------14
EVALUATION OF A 755 ERROR (PRINTHEAD OPEN)----------------------------------------------------------------- 14
EVALUATION OF A 765 ERROR (PRINTHEAD FAILURE)-------------------------------------------------------------14
EVALUATION OF THE CONTROL BOARD ASSY.----------------------------------------------------------------------- 14
EVALUATION OF COMMUNICATIONS-------------------------------------------------------------------------------------- 14
GENERAL TROUBLESHOOTING SUGGESTIONS-----------------------------------------------------------------------15
CHAPTER 4 DIAGNOSTICS ---------------------------------------------------------------------------- 19
POWER-UP SELF-TEST--------------------------------------------------------------------------------------------------------- 19
NV RAM ByteTest----------------------------------------------------------------------------------------------------------------19
Version String Mismatch -------------------------------------------------------------------------------------------------------19
System Restart Condition--------------------------------------------------------------------------------------------------- 19
Printhead Dot Resistance------------------------------------------------------------------------------------------------------ 19
TEST LABEL (LEVEL 1) ----------------------------------------------------------------------------------------------------------19
SERVICE DIAGNOSTICS-------------------------------------------------------------------------------------------------------- 20
Accessing Diagnostic Modes--------------------------------------------------------------------------------------------------20
Data Dump Mode ----------------------------------------------------------------------------------------------------------------20
Serial Loop Back Test-----------------------------------------------------------------------------------------------------------21
Parallel Port Test-----------------------------------------------------------------------------------------------------------------21
Diagnostics Test Mode----------------------------------------------------------------------------------------------------------21
Performing a Virgin Printer Reset-----------------------------------------------------------------------------------------21
Printing a Test Label ---------------------------------------------------------------------------------------------------------21
CHAPTER 5 TESTS AND ADJUSTMENTS--------------------------------------------------------- 23
SERVICE TESTS------------------------------------------------------------------------------------------------------------------- 23
CN6 Power Supply------------------------------------------------------------------------------------------------------------23
Continuity Tests ------------------------------------------------------------------------------------------------------------------23
Transformer - Primary Side ------------------------------------------------------------------------------------------------23
Transformer - Secondary Side---------------------------------------------------------------------------------------------23
Bridge Rectifier---------------------------------------------------------------------------------------------------------------- 23
Head Open Sensor -----------------------------------------------------------------------------------------------------------23
Displaying Machine/Service Totals--------------------------------------------------------------------------------------- 23
Print Contrast Adjustment------------------------------------------------------------------------------------------------------24
Platen Motor Gear Adjustment -----------------------------------------------------------------------------------------------24
Ribbon Tension Adjustment--------------------------------------------------------------------------------------------------- 24
CHECKING SUPPLY QUALITY-------------------------------------------------------------------------------------------------25