Zebra Technologies Q3DLUBA000002 Media Guide Assembly, QL420/420 Plus, Kit p/n Description Type

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Media Guide Assembly, QL420/420 Plus

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.

Kit p/n	Description	Type
RK18466-002	QL4 Linerless	Belt
RK18466-003	QL4 w/ Media Width	Belt
RK18466-004	QL4 Linerless w/Media Width	Belt
AN16753-001	QL4 Media Assy	Gear

Tools needed

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

Removing the Media Assembly

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

2.Remove the QuickLink Module and retain the parts.

3.Remove the Upper Housing and retain the parts.

4.Unplug the following cables from the MLB: J5 (Label Presence Sensor), J10 (Gap Sensor). If unit has the Media Width Sensor option, unplug J11 from the bottom of the board. Unplug the Printhead, Motor, Head-up switch, and Bar sense cables from the MLB.

5.Remove the Printer Frame and Media Cover and retain the parts.

7.Remove the Gap Sensor Cable Ground from the Printhead.

8.Remove and retain the Screws securing the Media Assembly to the Printer.

9.Remove the optional Media Width Sensor. If the Printer is equipped with the Media Width Sensor option, pull the sensor cable free of the Printer Frame.

10.Remove the Media Assembly. Rock the Media Assembly forward and then lift it away from the Printer Frame. Keep the Gap Sensor Cable with the Media As- sembly.

Installing the Media Assembly

1.Install the Media Assembly: Slip the Media Assembly into the slot in the Printer Frame. Note that the tab on the bottom of the Media Assembly fits into the slot on the bottom of the printer frame. On -003 and -004 kits only: Dress the Media Width Sensor Assembly through the Printer Frame

Note: Pull the Rack Lock to the left as shown in this view while assembling to allow the Me- dia Assembly to sit in the printer frame. Dress the (optional) Media Width Sensor Assembly through the slot in the side of the Printer Frame

2.Dress the Gap Sensor Cable. Fold the Gap Sensor Cable and dress it through the slot on the printer frame.

3.Secure the Media Assembly to the Printer Frame with screws from the motor side of the Printer Frame. Do not pinch any cables.

5.Secure the Gap Sensor Cable Ground to the Printhead.

RMAN-QLS-002 rev. A Repair Procedures

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Contents Mobile Printers Product Improvements Proprietary StatementContents QL series configurations and Parts Operating Modes DescriptionPrinting Technology CommunicationsIntroduction to Label Vista Diagnostic ToolsSample Configuration Label Printing a Diagnostic LabelCreating a Configuration Label Peripherals installed Configuration Label Example Starting Label Vista Using Label VistaEquipment Required For Label Vista Running The Software Equipment RequiredAdditional information Using the QL Product Configuration CodeQL Component Replacement Procedures Optional LCD Control Panel TroubleshootingStandard Control Panel No power Troubleshooting TopicsPoor or faded print or flashing RMAN-QLS-002 rev. a Repair Procedures QL220/220 Plus Repair Path MLB QL320 & QL420 Repair PathStorage and Handling Tools and SuppliesMedia Cover, QL 220- RK18236-1 & QL220 Plus- RK17735-015 Installing the Media CoverTools Needed Removing the Media CoverRMAN-QLS-002 rev. a Repair Procedures Model Kit p/n Comments Media Cover, QL 320, QL 320 Plus & QL 420,QL 420 PlusInstalling the Media Cover RMAN-QLS-002 rev. a Repair Procedures Removing the Media Guide Plate Assembly Media Guide Plate Assembly, QL220/220 PlusInstalling the Media Guide Plate Assembly Installing the Media Assembly Media Guide Assembly, QL320/320 PlusRemoving the Media Assembly Ensure Media Sensor cable is behind holding feature Kit p/n Description Type Media Guide Assembly, QL420/420 PlusModule Remove the Media Support Disks Install new Media Support DisksMedia Support Disks, QL Series Changing Media type Changing the Media Core SizeReplacing the Media Rollers Media Guide Rollers, QL420/QL 420 Plus AN16753-003AN16792-008- Installing the Peeler Bar Installing the Gear and PlatenAN16792-009- Installing the Scraper Platen/Gear Kits, QL220/QL 220 Plus AN16972-008Platen/Gear Kits, QL320/320 Plus- AN16861-013 & AN16861 014 Installing the ScraperPlaten/Gear Kits, QL420/420 Plus- AN16753-021 Replacing the Platen AssemblyIntroduction PreparationRemove the old Platen Assembly Removing the Upper Housing Upper Housing /Wireless Modules-QL220 & QL 220 PlusSet New Parameters Installing the Upper HousingInstalling the Upper Housing Upper Housing, QL320- RK18233-1Assemble the P.C. Board Cover Upper Housing, QL420/420 Plus- AN16753-007Assemble P.C. Board Cover Housing, Upper p/n DA16394-1Install the Upper Housing Assemble the Sensor Support Remove the Upper HousingLabel Presence Sensor, QL320- AN16861-015 Re-install the Upper Housing Install Label Present Sensor OptionInstall the Radio Installing a Wlan Radio and AntennaAssemble the Antenna Finish the AssemblyProcedure Outline QL 320/320 Plus & QL 420/420 Plus Wireless ModulesRemoving the Wireless Module Installing the Wireless ModuleUpper Housing or Wireless Module Screw, #4-40 x 3/8 Removing the LCD module Installing the KeypadRemoving the Keypad Installing the LCD module Installing an LCD Keypad Installing a Membrane Key Pad Printer Frame, QL220/220Plus- AN16972-001 Installing the Printer FrameRemoving the Printer Frame Install the new Printer Frame AssemblyRMAN-QLS-002 rev. a Repair Procedures From # of connections CPU Connector # Remove the Connector Door Connector Door, QL 220 /QL220 Plus AN16972-021Attach the new Connector Door Remove the Lower CoverInstall the Connector Door Connector Door, QL420 & QL420 Plus- AN16753-020Motor,QL220 & QL 220 Plus AN16972-002 Installing the MotorRemoving the Motor Motor, QL 320/320 Plus & QL420/420 Plus- RK18251-1From # of connections CPU Connector # Printhead, QL220- RK18278-1 & QL 220 Plus- RK17735-016 Installing the PrintheadPrinthead, QL320 RK18277-1 & QL 320 Plus- RK18465-003 Remove the Printhead Install the new Printhead AssemblyPrinthead, QL 420- RK18252-1 & QL 420 Plus- RK17735-004 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 Latch, QL 220/QL 220 Plus- AN16972-004 Installing the LatchRMAN-QLS-002 rev. a Repair Procedures Latch, QL 320/ QL 320 Plus- AN16861-025 Removing the Latch Latch, QL 420/ QL 420 Plus- AN16753-011Latch Assembly Removing the Peeler Shaft and Roller Installing the Peeler Shaft and RollerRemoving the MLB Installing 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 Removing the Belt Clip Installing the Belt ClipQL220 QL320 QL420AN16753-009 Install the Carrying Strap AN16753-010 Install the D-RingsInstalling the Bushings Installing the D RingsRemoving the D Rings Removing the BushingsInstall the Kickstand QL 220 ilustrated Installing the Battery Pack Removing the Battery PackComponent Replacement Procedures Using the Product Configuration CodeEurope Factory Repair and Parts Ordering ProcedureRepair Services contact Information USA PCC Notes QL 220 Product Configuration Code PCCPCC Example Accessory Parts not illustratedKIT RPR QL2 Media Guide W/BELT QL 220 & 220 Plus Replacement KitsShaded items are not illustrated Printer Mechanism Exploded View QL 220 & 220 Plus PartsQL 220 & 220 Plus Parts- Unit Exploded View PCC QL 320 & 320 Plus Product Configuration CodeInterpreting the PCC Code Assy Module Irda QL3/4 QL QL 320 & 320 Plus Replacement KitsKIT RPR QL 320 Media GUIDE/MW Unit Exploded View Pcmcia Radio Options QL 420 & 420 Plus Product Configuration Code Parts Not Illustrated KIT Repair QL4 PRINTHD/SENSOR QL 420 & 420 Plus Replacement KitsSelf TAP SCREW, M3X6, QTY RMAN-QLS-002 rev. a Replacement Kits 130 Pcmcia Option