Zebra Technologies Q4DLU1B000000, Q3DLUBA000002 manual Introduction, Installing an LCD Keypad

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Membrane & LCD Keypad, QL320/320Plus/320Cost Reduced

&QL420/420Plus/420Cost Reduced AN16861-021, RK18235-1 & RK17735-032

You must use an ESD strap and work at a properly grounded workstation (antistatic mat or tray). All electronic components must be placed on an ESD protective tray. If stored, any elec- tronic components must be placed in antistatic bags.

Introduction

You will need to replace the Keypad if it has been physically damaged or no longer functions properly. This procedure covers installation of both the standard membrane Keypad and the optional LCD Keypad. Remember that changing the type of keypad from what was originally installed on your printer will also change the printer’s configu- ration.

Tools needed

#1 Phillips Head Screwdriver. 3/32” hex driver

Preparation

1.Turn the printer off and remove the battery pack.

2.Remove the QuickLink Module.

3.Remove the Upper Housing.

Removing the Keypad

1.Unlock J6 on the MLB, and unplug the flex circuit.

2.Unlock J8 on the MLB, and unplug the flex circuit (LCD Keypads only)

3.Remove the screw and nylon Washer securing the Keypad ground strap to the MLB. Retain this hardware.

4.If you are replacing a Membrane Keypad:

a.Unlock J6 on the MLB, and unplug the flex circuit.

b.Remove the screw and Washer securing the Keypad ground strap to the MLB.

c.Slide the Keypad Assembly out of the Lower Housing as shown.

Installing an LCD Keypad

1.Plug the flex circuit from the Keypad into J6 and lock the connector.

2 Plug the Flex cable from the Display into J8 and lock the connector.

3.Fold the static ground strap from the Keypad so that exposed copper on the end of the ground strap will make contact with the pad on the MLB. Secure the Ground Strap to the MLB with a 4-40 x 1/4” Socket Head Screw and #4 Nylon Washer.

4.Slide the LCD Keypad into the Lower Housing, dressing the Keypad flex circuit (which plugs into J6) and the ground strap down and under the MLB. Gently fold loop of display Flex Circuit (which plugs into J8) over the top of Display. Al- low to relax back into place.

5.Slide the Keypad Assembly into the Lower Housing as shown, dressing the flex circuits down and under the MLB.

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RMAN-QLS-002 rev. A Repair Procedures

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Contents Mobile Printers Proprietary Statement Product ImprovementsContents QL series configurations and Parts Description Operating ModesPrinting Technology CommunicationsDiagnostic Tools Introduction to Label VistaCreating a Configuration Label Printing a Diagnostic LabelSample Configuration Label Peripherals installed Configuration Label Example Equipment Required For Label Vista Using Label VistaStarting Label Vista Equipment Required Running The SoftwareQL Component Replacement Procedures Using the QL Product Configuration CodeAdditional information Standard Control Panel TroubleshootingOptional LCD Control Panel Troubleshooting Topics No powerPoor or faded print or flashing RMAN-QLS-002 rev. a Repair Procedures QL220/220 Plus Repair Path QL320 & QL420 Repair Path MLBTools and Supplies Storage and HandlingInstalling the Media Cover Media Cover, QL 220- RK18236-1 & QL220 Plus- RK17735-015Tools Needed Removing the Media CoverRMAN-QLS-002 rev. a Repair Procedures Media Cover, QL 320, QL 320 Plus & QL 420,QL 420 Plus Model Kit p/n CommentsInstalling the Media Cover RMAN-QLS-002 rev. a Repair Procedures Media Guide Plate Assembly, QL220/220 Plus Removing the Media Guide Plate AssemblyInstalling the Media Guide Plate Assembly Removing the Media Assembly Media Guide Assembly, QL320/320 PlusInstalling the Media Assembly Ensure Media Sensor cable is behind holding feature Media Guide Assembly, QL420/420 Plus Kit p/n Description TypeModule Media Support Disks, QL Series Install new Media Support DisksRemove the Media Support Disks Changing the Media Core Size Changing Media typeMedia Guide Rollers, QL420/QL 420 Plus AN16753-003 Replacing the Media RollersInstalling the Gear and Platen AN16792-008- Installing the Peeler BarAN16792-009- Installing the Scraper Platen/Gear Kits, QL220/QL 220 Plus AN16972-008Installing the Scraper Platen/Gear Kits, QL320/320 Plus- AN16861-013 & AN16861 014Replacing the Platen Assembly Platen/Gear Kits, QL420/420 Plus- AN16753-021Introduction PreparationRemove the old Platen Assembly Upper Housing /Wireless Modules-QL220 & QL 220 Plus Removing the Upper HousingInstalling the Upper Housing Set New ParametersUpper Housing, QL320- RK18233-1 Installing the Upper HousingUpper Housing, QL420/420 Plus- AN16753-007 Assemble the P.C. Board CoverHousing, Upper p/n DA16394-1 Assemble P.C. Board CoverInstall the Upper Housing Label Presence Sensor, QL320- AN16861-015 Remove the Upper HousingAssemble the Sensor Support Install Label Present Sensor Option Re-install the Upper HousingInstalling a Wlan Radio and Antenna Install the RadioFinish the Assembly Assemble the AntennaQL 320/320 Plus & QL 420/420 Plus Wireless Modules Procedure OutlineRemoving the Wireless Module Installing the Wireless ModuleUpper Housing or Wireless Module Screw, #4-40 x 3/8 Removing the Keypad Installing the KeypadRemoving the LCD module Installing the LCD module Installing an LCD Keypad Installing a Membrane Key Pad Installing the Printer Frame Printer Frame, QL220/220Plus- AN16972-001Install the new Printer Frame Assembly Removing the Printer FrameRMAN-QLS-002 rev. a Repair Procedures From # of connections CPU Connector # Connector Door, QL 220 /QL220 Plus AN16972-021 Remove the Connector DoorAttach the new Connector Door Remove the Lower CoverConnector Door, QL420 & QL420 Plus- AN16753-020 Install the Connector DoorInstalling the Motor Motor,QL220 & QL 220 Plus AN16972-002Motor, QL 320/320 Plus & QL420/420 Plus- RK18251-1 Removing the MotorFrom # of connections CPU Connector # Installing the Printhead Printhead, QL220- RK18278-1 & QL 220 Plus- RK17735-016Printhead, QL320 RK18277-1 & QL 320 Plus- RK18465-003 Printhead, QL 420- RK18252-1 & QL 420 Plus- RK17735-004 Install the new Printhead AssemblyRemove the Printhead RMAN-QLS-002 rev. a Repair Procedures RMAN-QLS-002 rev. a Repair Procedures RMAN-QLS-002 rev. a Repair Procedures RMAN-QLS-002 rev. a Repair Procedures Installing the Latch Latch, QL 220/QL 220 Plus- AN16972-004RMAN-QLS-002 rev. a Repair Procedures Latch, QL 320/ QL 320 Plus- AN16861-025 Latch, QL 420/ QL 420 Plus- AN16753-011 Removing the LatchLatch Assembly Installing the Peeler Shaft and Roller Removing the Peeler Shaft and RollerInstalling the MLB Removing the MLBFrom # of connections MLB Connector # Compatibility Switch SW1 J4 Motor 103 RMAN-QLS-002 rev. a Repair Procedures RMAN-QLS-002 rev. a Repair Procedures 104 105 RMAN-QLS-002 rev. a Repair Procedures RMAN-QLS-002 rev. a Repair Procedures 106 Installing the Belt Clip Removing the Belt ClipQL220 QL320 QL420AN16753-010 Install the D-Rings AN16753-009 Install the Carrying StrapInstalling the D Rings Installing the BushingsRemoving the D Rings Removing the BushingsInstall the Kickstand QL 220 ilustrated Removing the Battery Pack Installing the Battery PackUsing the Product Configuration Code Component Replacement ProceduresRepair Services contact Information USA Factory Repair and Parts Ordering ProcedureEurope QL 220 Product Configuration Code PCC PCC NotesAccessory Parts not illustrated PCC ExampleQL 220 & 220 Plus Replacement Kits KIT RPR QL2 Media Guide W/BELTShaded items are not illustrated QL 220 & 220 Plus Parts Printer Mechanism Exploded ViewQL 220 & 220 Plus Parts- Unit Exploded View QL 320 & 320 Plus Product Configuration Code PCCInterpreting the PCC Code QL 320 & 320 Plus Replacement Kits Assy Module Irda QL3/4 QLKIT RPR QL 320 Media GUIDE/MW Unit Exploded View Pcmcia Radio Options QL 420 & 420 Plus Product Configuration Code Parts Not Illustrated QL 420 & 420 Plus Replacement Kits KIT Repair QL4 PRINTHD/SENSORSelf TAP SCREW, M3X6, QTY RMAN-QLS-002 rev. a Replacement Kits 130 Pcmcia Option
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