The Speaker Company
TTP 248M
service manual
TTP-248M Bar Code Printer
Troubleshooting
Specification
Reset Circuit
Connector Circuits
Diagnosis Operation Procedure
Update History
Page 60
TTP-248M
Bar Code Printer
Service Manua
l
4. Reassemble in the reverse procedures after replacing.
57
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Image 60
Page 59
Page 61
Contents
TTP 248M
Table of Content
TTP-248M Bar Code Printer
TTP-248M Bar Code Printer
Foundamentals about the System
Printer Overview
TTP-248M Bar Code Printer Pinter Specification
Specification
Communication Interface
Available Bar Codes
Text Specification
File Head of Font Fixed 32bytes
BF3~4 VF3~4
Specification
Types of Paper
TTP-248M Bar Code Printer Ribbon Specification
Circuit Description
MCU
MCU
MCU PIN Description
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TTP-248M Bar Code Printer Reset Circuit
Reset Circuit
TTP-248M Bar Code Printer Memory System
Etro N Tech
Decoder Circuits
Memory Address Map
Use by CPU Area Internal I/O
Sdram
TTP-248M Bar Code Printer Firmware Address Map
TTP-248M Bar Code Printer Power Down Sensor
VCC
TTP-248M Bar Code Printer Print Head
GND
Motor System Circuit
Stepping Motor Pattern
TTP-248M Bar Code Printer Sensor Circuits
Ribbon Near End Sensor
10 Black mark/ Gap Sensor Circuit Peel-off Sensor
11 Peel-off Sensor Circuit Case Sensor
Serial Port Circuit
GND VDD
Parallel Port Circuit
VDD
TTP-248M Bar Code Printer Cutter Drive System
17 Cutter Drive Circuit
TTP-248M Bar Code Printer PIN Switch Circuits
Connector Circuits
21 Memory Card Connector
23 Stepping Motor Connector
TTP-248M Bar Code Printer Optional Items Circuits
Optional Item---Buzzer
Machanism
Remove the Covers and LCD Panel
Loosen the three screws on Top Left Side Cover
Screw LCD Panel Lower Front Cover
TTP-248M Bar Code Printer Replacing the Mainboard
TTP-248M Bar Code Printer Replacing the Power Supply Unit
Belt Ring of Label Rewind Spindle
Remove the E-ring of pulley. And then, remove the pulley
TTP-248M Bar Code Printer
TTP-248M Bar Code Printer Replacing Ribbon Supply Spindle
TTP-248M Bar Code Printer
TTP-248M Bar Code Printer Replacing Label Supply Spindle
TTP-248M Bar Code Printer
TTP-248M Bar Code Printer Replacing Label Rewind Spindle
TTP-248M Bar Code Printer
TTP-248M Bar Code Printer Replacing Platen
Remove the Platen and Left Shaft Bearing
TTP-248M Bar Code Printer Replacing Motor
TTP-248M Bar Code Printer
TTP-248M Bar Code Printer Replacing Print Head
Remove the 2 screws these are on the TPH switch plate
Remove A.B.C.D in order Loosen M4 screw, knob E and F
TTP-248M Bar Code Printer Replacing Gap/Black Mark Sensor
TTP-248M Bar Code Printer
Reassemble in the reverse procedures after replacing
Curly plastic pipe Screws
Troubleshooting
Troubleshooting
Calibrate Gap/Black Mark Sensor
Flash / Dram
Diagnosis Operation Procedure
TTP-248M Bar Code Printer Self-test
Dram Clear
TTP-248M Bar Code Printer Cleaning Print Head
Update History
No.35, Sec , Ligong 1st Rd., Wujie Township
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