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Casio PX-780 User Manual

Casio PX-780
102 pages
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SERVICE MANUAL
HANDHELD TERMINAL
IT-3100 Series
(PX-780)
JUL. 2008
Ver.4 : Feb. 2011
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Casio PX-780 Specifications

General IconGeneral
Touch Response3 sensitivity levels, Off
Speakers12cm x 2, 5cm x 2
Sound SourceMulti-dimensional Morphing AiR
Maximum Polyphony128
Number of Tones18
Digital EffectsReverb (4 types), Chorus (4 types), Brilliance, DSP (some tones)
Recorder[MIDI Recorder] 2 tracks, 1 song, Approximately 5, 000 notes total
Pedals3 (Damper, Soft, Sostenuto)
Keyboard88-key, Scaled Hammer Action Keyboard

Summary

PRECAUTIONS

Precautions When Handling and Using the Product

Safety and handling guidelines for charging, feeding, batteries, printer, paper, and general use.

Storage Recommendations

Recommendations for storing the product to prevent damage and maintain condition.

General Safety Precautions

General safety warnings related to battery replacement and disposal.

1. GENERAL

Product Concept Overview

Overview of the IT-3100 series as an enhanced handheld terminal from the IT-3000 series.

Model Configuration by Specification

Table detailing hardware configurations across different IT-3100 models.

Available Options

List of optional accessories available for the IT-3100 series.

2. SPECIFICATION

System Requirements Details

Details CPU, OS, Memory, Display, Imager, IR, Serial, and Bluetooth specifications.

Printer, Power, and Environmental Specs

Specifics on printer capabilities, power requirements, operating environment, and physical characteristics.

Part Name Identification

Identification and description of various physical parts of the IT-3100 terminal.

Key Functions Explained

Explanation of the purpose and operation of each key on the terminal.

3. TECHNICAL INFORMATION

Wiring Diagram

Schematic showing the electrical connections between major components of the terminal.

System Diagram

Diagram illustrating the overall system architecture and component interconnections.

Main PCB View and Connectors

Layout and connector identification for the Main Printed Circuit Board.

Main PCB Component Locations

Visual representation of component placement on the main PCB.

4. TROUBLESHOOTING

Troubleshooting: Device Does Not Turn ON

Troubleshooting flowchart for power-on issues, including checks for battery, connectors, and PCBs.

Key/Button, Touch Panel, and LCD Issues

Diagnostic procedures for failures related to keys, touch panel, and LCD.

Scanner LED and Sensor Issues

Troubleshooting steps for problems with the scanner LED and various sensors.

Speaker, Card, and LED Issues

Diagnostic flowcharts for issues with speaker, PCMCIA/SD cards, and charge LED.

IrDA, 8-pin Interface, and Bluetooth Issues

Troubleshooting steps for communication interface problems including IrDA, 8-pin, and Bluetooth.

Printer, Key Backlight, and MCR Issues

Diagnostic procedures for printer, key backlight, and magnetic card reader faults.

CMOS Imager Troubleshooting

Troubleshooting flowchart for issues with the CMOS imager, including connection and FPC checks.

5. SYSTEM FUNCTION

Power ON/OFF Control

Explains factors that turn the device ON, prevent it from turning ON, and turn it OFF.

Power Saving Control Features

Details power saving features like Idle state, CPU frequency, Auto Power Off, Dimmer, and Backlight Off.

Backlight Brightness Restriction by Temperature

How temperature affects backlight brightness and its automatic restriction.

Low Voltage Monitoring

Details the four low voltage detection levels and battery status monitoring.

6. BASIC OPERATIONS

Attaching the Neck Strap

Step-by-step instructions for attaching and removing the neck strap.

Calibrating Touch Screen Alignment

Procedure to calibrate the touch screen response for accurate input.

Adjusting Display Contrast and Brightness

Steps to adjust display contrast and screen brightness for better readability.

Display Auto Dimmer Configuration

How to adjust screen brightness and configure the auto-dimmer feature.

C-MOS Imager Usage

Instructions for using the C-MOS Imager to read bar codes and 2D codes.

C-MOS Imager Warning Label

Safety warnings regarding laser light exposure from the C-MOS Imager.

Magnetic Card Reader Operation

Instructions for reading magnetic cards and precautions during use.

Data Communication Methods

Procedures for IR and RS-232C data communication.

Bluetooth Communication

Instructions for Bluetooth data transfer and precautions for interference.

7. RESET OPERATION

Resetting the Handheld Printer Terminal

Steps to perform a standard reset and its effects on the terminal.

Performing a Full Reset (Initialization)

Detailed procedure for performing a full reset (initialization) of the device.

8. HARDWARE INSPECTION

Service Utility Software

How to obtain and use the service utility software for hardware testing.

Booting the Diagnostic Program

Instructions for booting and navigating the diagnostic program.

Function Test Procedures

Table of inspection items, target models, tools, and guide pages for functional testing.

SDRAM Function Test

Detailed steps for testing the SDRAM functionality using the diagnostic program.

NAND-FROM Function Test

Detailed steps for testing the NAND-FROM functionality using the diagnostic program.

KEY/BUTTON Function Test

Detailed steps for testing the functionality of all keys and buttons.

TOUCH PANEL Function Test

Detailed steps for testing the touch panel functionality.

LCD Function Test (Parts 1-3)

Steps for testing LCD patterns, VCOM, and LED backlight adjustment.

Scanner LED Function Test

Steps to test the scanner LED colors (red, green, orange).

Sensor Function Tests

Testing of Battery Voltage, LCD/CPU Temperature, and Bright Sensor.

Speaker Function Test

Testing of speaker audio output and volume levels.

PCMCIA Card Function Test

Steps for checking the PCMCIA card slot and functionality.

SD Card Function Test

Steps for checking the SD card slot and functionality.

MCR Function Test

Testing of the Magnetic Card Reader (MCR) functionality with diagnostic cards.

Key Backlight Function Test

Testing the key backlight functionality (ON/OFF).

Printer Function Test

Steps to test printer functionality, specifications, and printing output.

Paper Marker Detection Test

Procedure to test the paper sensor and marker detection.

Charge LED Test

Steps to test the charge LED indicator status during charging.

IrDA Communication Test

Initial setup for testing IrDA communication, including driver installation and PC connection.

Bluetooth Communication Test

Steps for initiating Bluetooth tests using diagnostic software on the device and opponent.

CMOS Imager Test

Steps to test the CMOS Imager functionality by scanning symbols.

Consumption Current Measurement

Table of items and tools for measuring operational, idle, and print current consumption.

Operational Current Measurement

Detailed procedure for measuring operational current using the diagnostic program.

IDOL and Print Current Measurement

Procedures for measuring idle current and print current consumption.

9. ADJUSTMENT/SETTING UPON REPAIR

Repair Actions and Required Jobs

Table showing required jobs for PCB or LCD module replacement.

Necessary Tools for LCD Adjustment

Lists the specialized tools required for LCD intensity and flicker adjustments.

LCD Intensity Adjustment Procedure

Steps to adjust LCD brightness to a specific level using a display tester.

LCD Flicker Adjustment Procedure

Steps to adjust LCD flicker to a minimum level using a display tester.

ID Number Registration Process

Procedure for registering the device's serial number and scanner type.

Confirming Registered ID

How to confirm the registered serial number and scanner type.

Model Status Setting

Procedure to set the model status before function tests.

10. DISASSEMBLY AND ASSEMBLY

Disassembly Procedure: Roll Paper Holder and Case

Step-by-step guide for disassembling the Roll Paper Holder and separating the case.

Case Separation and FPC Handling

Instructions for removing screws, opening the case, and handling FPC cables.

Removing Middle Case and Main PCB

Procedures for removing the middle case and the main PCB.

Printer Unit Removal

Steps for removing the printer unit from the device.

LCD Module Removal

Procedures for removing the LCD shield, touch panel, and LCD module.

Assembly Precautions for FPC Cables

Guidelines for processing FPC cables during assembly.

Assembling the Magnetic Card Reader

Step-by-step guide for assembling the Magnetic Card Reader unit.

Assembling the CMOS Imager

Step-by-step guide for assembling the CMOS Imager module.

Affixing Plastic Sheets on Battery Pack

Instructions for correctly applying plastic sheets to the battery pack.

Replacing the Paper Sensor PCB

Procedures for removing and attaching the Paper Sensor PCB.

Attaching Shield Sheet to FFC/FPC Cable

Instructions for applying shield sheets to FFC/FPC cables for protection.

Assembling the Power Key PCB

Step-by-step guide for assembling the Power Key PCB.

Notes on Replacing Main PCB Assy

Important information regarding changes in MAIN PCB ASSY versions and replacement procedures.

11. EXPLODED VIEW

Final Assembly Exploded View

Exploded view of the complete handheld terminal assembly.

Upper Case Assembly Details

Detailed exploded view of the upper case components and FPC connections.

Inner Case Assembly Details

Detailed exploded view of inner case components and connector FPCs.

Lower Case and MCR Block Details

Detailed exploded views of lower case and MCR block components.

Roll Paper Holder Details

Exploded view of the roll paper holder components.

LABELS and BUNDLED ITEMS

Terminal Labels

Images and descriptions of labels applied to the terminal.

Bundled Items List

List and images of accessories included in the package.

12. PARTS LIST

Upper Case Assembly Parts

List of part numbers and names for the Upper Case Assembly.

Inner Case Assembly Parts

List of part numbers and names for the Inner Case Assembly.

Lower Case and Roll Paper Holder Parts

Parts list for Lower Case and Roll Paper Holder assemblies.

Other Components Parts List

Parts list for other components like MCR, CMOS Imager, and insulation sheets.

Tools and Special Screws Parts List

Parts list for tools and special screws used for the device.

Appendix 1. Recommended Paper List

1-Ply Roll Paper Specifications

Recommended paper types and specifications for 1-ply paper.

2-Ply Formed and Label Paper Specifications

Recommended 2-ply formed and label paper types and specifications.

Appendix 2. Test Sheet Sample

Paper Marker Sensor Test Sheet

Sample test sheet for calibrating the paper marker sensor.

Paper Marker Detection Test Sheet

Sample test sheet for calibrating paper marker detection.

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