Toshiba GD-1221, GD-1220 service manual Important Service Parts for Safety, Vorsicht

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-Avoid expose to laser beam during service. This equipment uses a laser diode. Be sure not to expose your eyes to the laser beam. Do not insert reflecting parts or tools such as a screwdriver on the laser beam path. Remove all reflecting metals such as watches, rings, etc. before starting service.

-Be sure not to touch high-temperature sections such as the exposure lamp, fuser unit, damp heater and areas around them.

-Be sure not to touch high-voltage sections such as the chargers, developer, high-voltage trans- former and power supply unit. Especially, the board of these components should not be touched since the electric charge may remain in the capacitors, etc. on them even after the power is turned OFF.

-Make sure that the equipment will not operate before touching potentially dangerous places (e.g. rotating/operating sections such as gears, belts pulleys, fans and laser beam exit of the laser optical unit).

-Be careful when removing the covers since there might be the parts with very sharp edges underneath.

-When servicing the equipment with the power turned ON, be sure not to touch live sections and rotating/operating sections. Avoid exposing your eyes to laser beam.

-Use designated jigs and tools.

-Use recommended measuring instruments or equivalents.

-Return the equipment to the original state and check the operation when the service is finished.

3)Important Service Parts for Safety

-The breaker, door switch, fuse, thermostat, thermofuse, thermistor, batteries, IC-RAMs including lithium batteries, etc. are particularly important for safety. Be sure to handle/install them properly. If these parts are short-circuited and their functions become ineffective, they may result in fatal accidents such as burnout. Do not allow a short-circuit or do not use the parts not recommended by Toshiba TEC Corporation.

4)Cautionary Labels

-During servicing, be sure to check the rating plate and cautionary labels such as “Unplug the power cable during service”, “CAUTION. HOT”, “CAUTION. HIGH VOLTAGE”, “CAUTION. LASER BEAM”, etc. to see if there is any dirt on their surface and if they are properly stuck to the equipment.

5)Disposal of the Equipment, Supplies, Packing Materials, Used Batteries and IC-RAMs

-Regarding the recovery and disposal of the equipment, supplies, packing materials, used batter- ies and IC-RAMs including lithium batteries, follow the relevant local regulations or rules.

Caution:

Dispose of used batteries and IC-RAMs including lithium batteries according to this manual.

Attention:

Se débarrasser de batteries et IC-RAMs usés y compris les batteries en lithium selon ce manuel.

Vorsicht:

Entsorgung der gebrauchten Batterien und IC-RAMs (inclusive der Lithium-Batterie) nach diesem Handbuch.

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Contents GD-1220/1221 Page Transportation/Installation Important Service Parts for Safety VorsichtContents 2006 2008 Toshiba TEC Corporation All rights reserved FAX Options GD-1220 GD-1221 RemarksSTUDIO165/205 Available STUDIO167/207/237 System firmware versionSpecifications DBm to -8 dBm The setting can be changed by 1 dB Transmission systemEmbedded DBm to 0 dBm Level -55 dBm or lower cannot be detectedFolio Dimension width x length Printing areaComp Features Specifications and Outline of System 08/08 Following accessories and parts come with the FAX unit Accessories and PartsAccessory Qty Options Extends the FAX functions when the FAX unit is installedOption Function Model NA/EU/AU/TW System ListADF Radf Units and Components Symbol Name Function Layout of PC BoardsFAX PWA-F-NCU-631LSU-RELATED Functions Recording paper sizeEffective recording area Size Horizontal x Vertical Effective recording areaFor MJD, AUD, ASD, SAD, TWD, and CND models Unit mm inch Inch Feed direction Mm 0.16 inch Effective recording areaSize Horizontal x Vertical Effective recording range 297 x 293 x A4-R 210 x 206 x A5-R 148 x 144 x 257 x 253 xPrint mode Recording paper selection algorithm Recording paper selection algorithm and print algorithmPrint algorithm Reception print flowchart Start Receive FAX Judgment parameterDiscard printing Bit Discard parameterVertical reduction print Similar reduction print RTI For MJD, AUD, ASD, SAD, TWD, CND models ScanningST-R Comp Scanning widthRecording paper range For MJD, AUD, ASD, SAD, TWD, and CND modelsRecording paper range A4-R Recording paper range LT long Comp long LD long Comp *2 Comp *1Recording paper range A4 long B4 long A3 long Folio Folio *1Error processing Limitations on reception print Order DrawerLSU-RELATED Functions Circuit Connection and Procedure to Change Mode Dial call-up transmission to a telephone circuitYES Standby stateSelection of the communication mode Procedure to select the transmission modeCommunication mode Toshiba original procedure Telephone circuitSignaling System Diagram and Signal Forms Circuit control signalsThis signal can be sent manually Signal form Signal name Signal formCommunication with the binary signals Image signalMode change is possible only for the original set manually ReceiverOnly error frame retransmitted 1 completed 2 completed Frames received Error occurredCFR CED NsfcsidisMCF Binary signals PIP PINPRI-EOM PRI-MPSFCF FIF FCS When this frame is the last frame, X =Format FCF format of each binary signal Binary signal Format4800 bps, 2400 bps 9600 bps, 7200 bpsTCF 3 V.8/V.34 communication sequence Standard procedure Transmitter Receiver Line closedSignal name Abbreviation Function Remarks Tone signal between Hz and 3,750 Hz in units150 Hz Frequency transmission CapabilityTRN ALTMaintains the synchroniza 7E H Tion Receives an NSF sent fromTransmitter ReceiverImage data Image data are sent. Transmitter Scrambled data frame to beIs completed Encoded image data Turn off Scrambled 1 is sent forShort training Signal PPS-EOPTransmission of one Is completed Informs to disconnect the lineLine closed DIS cannot be recognized DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control FAX Automatic Switching TEL modeFAX mode General functionsDIALING/COMMUNICATION Control Configuration GD-1220/1221Configuration Description of CircuitsEU/AU/AS/C models Line path switching control circuit Signal Name Type Active Description DestinationCML1 ATT3DB1IC3 RLY3, IC3IC5 Line 1 Dial Pulse Generation Signal Q53 Dial pulse generation circuitLine 1 Dial Pulse Generation Signal Line Current Detection Signal IC23 Line Reverse Current Detection Signal IC23Line current detection circuit REVA1Line 1 Current Detection Signal IC23 Current Reverse Line 1 Current Detection IC23 SignalLine 1 CI Detect Signal IC23 CI detection circuitLine 1 CI Detection Signal IC23 Line monitor circuit FAX boardMonitoring signal Ringer/AlarmLine Monitor LOW HighSound volume PC Boards PWA-F-FAX-635 GD-1220PWA-F-FAX-678 GD-1221 PWA-F-NCU-631 NAD, TWD, SAD PWA-F-NCU-631 MJD, AUD, ASD, CND Electrical Circuits Installation Explanation to the UsersInstallation
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