Ericsson R250s PRO Troubleshooting Instructions
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Ericsson R250s PRO Troubleshooting Instructions

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Standard Trouble Shooting Instructions
Standard Trouble Shooting Instructions
Applicable for R250s PRO
4/00021-2/FEA 209 544/18 D
Approved according to 1776-2/FEA 209 544

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  • Page 1 Standard Trouble Shooting Instructions Standard Trouble Shooting Instructions Applicable for R250s PRO 4/00021-2/FEA 209 544/18 D Approved according to 1776-2/FEA 209 544...

  • Page 2: Table Of Contents

    Standard Trouble Shooting Instructions Contents Explanations ........................3 Network problems.......................6 On/Off problems .........................9 Audio problems .........................13 Display/ Illumination problems ..................18 Capacity/ Charging problems..................22 Sim Problems........................24 Key problems........................27 Alert problems........................32 Data communication problems..................33 Other problems .........................34 Revision History........................35 4/00021-2/FEA 209 544/18 D 2(35)

  • Page 3: Explanations

    Standard Trouble Shooting Instructions 1 Explanations Component placement reference For component placement see doc.1078-2/FEA 209 544/18 Pin placement 4/00021-2/FEA 209 544/18 D 3(35)
  • Page 4 Standard Trouble Shooting Instructions 4/00021-2/FEA 209 544/18 D 4(35)
  • Page 5 Standard Trouble Shooting Instructions Abbreviations Crystal. Capacitor. Digital circuit. Over voltage protection. Buzzer, LED, pads for display. Connector. Coil. Analogue circuit, power amplifier at some phones. Resistor. Keyboard pads. Transistor, diode. Contact surface at the circuit board. Filter. DCIO: DC voltage through the system connector for charging. GND: Ground.

  • Page 6: Network Problems

    Standard Trouble Shooting Instructions 2 Network problems Find out if the fault is RX or TX related Connect the phone, with the signalling program, to a GSM test instrument and try to get serv at - 68,5 dbm signal strength. If the phone gets serv, go to the section 2.1.2.
  • Page 7 Standard Trouble Shooting Instructions If pin4, the control voltage is too low or missing. Measure the resistance of R312~22 kohms. If R312 is ok, measure the control- voltage 1,7V at N301 pin5, at the start of the board. If the control voltage is too low or missing, replace N301 and C317. If the control voltage is ok at N301pin5 and too low at N303 pin4, replace C319 and C314.
  • Page 8 Standard Trouble Shooting Instructions 2.1.3 Read the RX level value from the GSM instrument while the call is connected If the RX-level is at 40-46 steps, make sure the output power is 31-35 dBm for GSM 900(power level 5) or 28-32dBm for GSM1800 (power level 0). If it is correct, lower the signal strength to -102dBm for GSM 900 and make sure the RX-level is 6-12 steps and that the RX-quality value is at 0-2steps.

  • Page 9: On/Off Problems

    Standard Trouble Shooting Instructions 3 On/Off problems Starting the phone pressing the On/Off key 1. Remove the battery and make a visual check of the battery connectors, make sure they are intact. 2. Insert a dummy battery into the phone, start it up by pressing the On/Off key and check the current consumption.
  • Page 10 Standard Trouble Shooting Instructions The phone runs as long as the On/Off key is pressed Disassemble the phone and check for liquid damage. No further action should be taken for a liquid damaged telephone. Make sure the system connector pads-J602 not are damaged or burned. Mount the board in the fixture.
  • Page 11 Standard Trouble Shooting Instructions If any of the voltage are too low, measure the resistance from it to ground (VDIG - >500 ohms, VDSP - >25 kohms). If the resistance is correct, replace the corresponding regulator. If it is too low, send the unit on according to the local company directives. If any of the voltages are too high, replace the corresponding regulator.
  • Page 12 Standard Trouble Shooting Instructions • Check the amplitude of the 13MHz system clock at B510 pin 1 ~1V t-t. Measure it by using an oscilloscope, spectrum analyser, frequency counter or diode probe. If the amplitude is too low, send the unit on according to the local company directives. Make sure there aren’t any faulty soldering at D600 or D610.

  • Page 13: Audio Problems

    Standard Trouble Shooting Instructions 4 Audio problems Type of fault Make a call to another phone. Check which part is faulty, (microphone, and earphone). Switch ON manually the loudspeaker. Check which part is faulty (microphone, loudspeaker). If the microphone is faulty, go to the section 4.1.1 microphone problems. If the earphone is faulty, go to the section 4.1.2 earphone problems.
  • Page 14 Standard Trouble Shooting Instructions If not replace C815 and C816. If the fault remains: Check the soldering and measure the resistance of C850 >100 kohms and C851>1 kohm. Replace the faulty component. If the fault remains: Check the soldering and measure the resistance of C801, C808, C814, C818, C819, C829, C830, C831, and C834.
  • Page 15 Standard Trouble Shooting Instructions If R916 and R918 are ok: Replace the components C919, V901, N900 one by one. After each replacement, give the phone power and start it up and check the DC voltage 4,6V at N900 pin1 If the DC voltage 4,6V at N900 pin1 is correct: Replace N900 and N901.
  • Page 16 Standard Trouble Shooting Instructions 4.1.5 The hands free can not be detected Check visually the system connector of the phone (if its damaged, dust...). Disassemble the phone and check for liquid damage, especially at the system connector-pads. No further action should be taken for a liquid damaged telephone. Check the soldering of D600, pin67 and pin70.
  • Page 17 Standard Trouble Shooting Instructions If the VDSPC is low and the resistance between VDSPC and ground is <10kohms, replace the components one by one and check the resistance after each replacement: C903, C904, C905, R727, N701 and D900. If the VDSPC is low and the resistance between VDSPC and ground is >10kohms, replace the components one by one and check the 10 kohms after each replacement of V703, R727 and N701.

  • Page 18: Display/ Illumination Problems

    Standard Trouble Shooting Instructions 5 Display/ Illumination problems Display problems Type of fault Insert a fully charged battery into the phone and start it up. If the display is missing some of the segments, go to 5.1.1 If the display is empty, go to 5.1.2. 5.2.1 Segments are missing Disassemble the phone and check for liquid damage.
  • Page 19 Standard Trouble Shooting Instructions 4. VDLCD (3.2V) is incorrect, measure the resistance from the pad to pin 45 of D600 ~0 ohm. If it is higher there is a foil damage, send the unit on according to the local company directives. If it is correct, measure the resistance from the pad to ground (>2.5 Mohms).
  • Page 20 Standard Trouble Shooting Instructions 5.3.1 If all the LED’s in group D are not lit • Check the soldering and measure the resistance of R609, R660, R607 and R608. Replace the faulty component. If the fault remains, give the board power only, do not switch it on. •...
  • Page 21 Standard Trouble Shooting Instructions Top indicator problems 5.4.1 Green top indicator Disassemble the phone and check for liquid damage. No further action should be taken for a liquid damaged telephone. Make sure that the double LED H650 is correctly soldered. •...

  • Page 22: Capacity/ Charging Problems

    Standard Trouble Shooting Instructions If it is correct, replaceH650. If the level at H650 pin2 is low, replace C621. If the level at H650 pin1 is low, replace C655. 5.4.5 If the 3,8 VDC at H650 pin2 is missing • Measure at N411 pin5 the 3,8VDC.
  • Page 23 Standard Trouble Shooting Instructions Check the soldering and measure the resistance of R430 ~33 kohms and R403 ~100 kohms. Replace the faulty component. If the fault still remains, send the unit on according to the local company directives. 6.1.5 No charging Disassemble the phone and check for liquid damage.

  • Page 24: Sim Problems

    Standard Trouble Shooting Instructions 7 Sim Problems What is “SIM fault” Insert a working SIM-card and a fully charged battery into the phone and start it up. If the display says: • “Wrong card” or “Insert correct card” the phone is SIM-locked and cannot be repaired at this level •...
  • Page 25 Standard Trouble Shooting Instructions 7.2.1 If the signal of the SIMVCC is low or missing • Measure at D601 pin 1~3,2 VDC If the level is missing or low replace C626, R682, D601. If the level is ok measure the resistance from the SIMVCC-pad to ground. It should be >2 Mohms.
  • Page 26 Standard Trouble Shooting Instructions If the pulses are correct, replace D601and C693. If they are incorrect, measure the resistance between D601 pin5 and D600 pin 74,it should be ~0 ohm. If the resistance is substantially high, send the unit on according to the local company directives.

  • Page 27: Key Problems

    Standard Trouble Shooting Instructions 8 Key problems Verify the fault Insert a SIM card and a fully charged battery into the phone. Start it up by pressing the On/Off key. • If it does not start at all, go to chapter On/0ff problems. Press all the keys to verify which ones are faulty.
  • Page 28 Standard Trouble Shooting Instructions • If the resistance to ground is to low from the pad: X824: replace C657 and C687. X825: replace C658 and C688. X826: replace C658 and C688. If the fault still remains, replace D600. Check the soldering at D600 pins 122, 123 and 128. •...
  • Page 29 Standard Trouble Shooting Instructions Alert button malfunction Disassemble the phone and check for liquid damage, especially around X828 andX829. No further action should be taken for a liquid damaged telephone. Make sure that the function of the micro switches in the front cover is ok, if not replace the faulty switch according to mechanical repair guide.
  • Page 30 Standard Trouble Shooting Instructions Check the soldering at D600 pin 124 and 128. • Measure the resistance from X825 to D600 pin 128, and from P611 to D600 pin 124 ~0 ohm. If the resistance is incorrect there is a foil damage, send the unit on according to the local company directives.
  • Page 31 Standard Trouble Shooting Instructions The functional schema is shown in the figure below. Make sure there is voltage (3.2V) at the pads of the keys. Note that the “No” key has 4.8V. If the voltage is missing at an entire row of keys, measure the voltage at the corresponding pin of D600 •...

  • Page 32: Alert Problems

    Standard Trouble Shooting Instructions 9 Alert problems Type of fault Insert a dummy battery and a SIM card into the phone, start it up. Go to the “menu /Ring Vol.” and activate the vibrator and rise the volume to max. Switch off the phone and restart it.

  • Page 33: Data Communication Problems

    Standard Trouble Shooting Instructions Replace C612, C613 and C622. Restart the board and check if the vibrator is operating. • If the fault remains, measure with the oscilloscope at N601 pin1, give the board power and start it up. At the start 3 pulses with an amplitude of 3.2V will appear in the oscilloscope. If the pulses are correct at N601 pin1, restart the board and check the pulses at pin4.

  • Page 34: Other Problems

    Standard Trouble Shooting Instructions 11 Other problems 11.1 Real Time Clock problems 11.2 Finding the fault Start the phone with a SIM-card. Set the correct time. Remove the battery and re-insert it after a minute. If the time says 00:00, go to 11.3. Compare to the correct time. If the clock is speeding or is halted, go to 11.4.

  • Page 35: Revision History

    Standard Trouble Shooting Instructions 12 Revision History Rev. Date Replaces / Comments 99-09-27 Pin placement added Go/No Go elucidation added Component classification in text removed Figures replaced due to new circuit board layout 99-11-16 Division into chapters / chapters headings replaced. Figures in document removed.
  • Page 36 Standard Mounting Drawing Standard Mounting Drawing Applicable for R250s PRO Contents Mounting drawing table.....................2 1078-ROA 117 3833 Rev A....................3 Component position location table for 1078-ROA 117 3833 Rev A ....5 Revision History........................9 1078-2/FEA 209 544/18 C Approved according to 1776-2/FEA 209 544...

  • Page 37: Mounting Drawing Table

    Standard Mounting Drawing 1 Mounting drawing table R250s PRO Board no. Mounting drawing ROA 117 3833 All revisions 1078-ROA 117 3833 Rev A 1078-2/FEA 209 544/18 C 2(9)

  • Page 38: 1078-Roa 117 3833 Rev A

    Standard Mounting Drawing 2 1078-ROA 117 3833 Rev A 1078-2/FEA 209 544/18 C 3(9)
  • Page 39 Standard Mounting Drawing 1078-2/FEA 209 544/18 C 4(9)

  • Page 40: Component Position Location Table For 1078-Roa 117 3833 Rev A

    Standard Mounting Drawing Component position location table for 1078-ROA 117 3833 Rev A 1- located on primary side 2- located on secondary side POS. LOC. POS. LOC. POS. LOC. POS. LOC. POS. LOC. B510 1-H6 C221 2-M4 C314 1-E3 C435 1-B5 C550 1-E5...
  • Page 41 Standard Mounting Drawing POS. LOC. POS. LOC. POS. LOC. POS. LOC. POS. LOC. C617 2-G6 C693 1-N5 C831 2-A3 D901 2-N7 L351 1-F3 C618 2-G7 C710 1-L7 C832 2-A4 D902 2-N7 L401 1-C7 C619 2-S6 C711 1-M7 C833 1-L4 E101 2-S5 L402 1-C5...
  • Page 42 Standard Mounting Drawing POS. LOC. POS. LOC. POS. LOC. POS. LOC. POS. LOC. P614 2-E5 R407 1-C6 R604 2-C7 R724 2-D7 R921 2-M5 P615 2-A4 R408 1-D6 R605 2-B4 R725 1-M6 R922 2-L3 P616 2-A4 R409 1-D6 R606 2-L3 R726 2-D2 R923 2-L4...
  • Page 43 Standard Mounting Drawing POS. LOC. POS. LOC. POS. LOC. POS. LOC. POS. LOC. V412 1-B6 V614 2-F5 X607 2-N2 X711 1-T5 X827 2-S2 V414 1-B6 V615 1-K3 X608 2-K2 X712 1-T5 X828 2-T3 V510 1-H5 V701 2-F4 X609 2-K2 X713 1-T5 X829 2-T4...

  • Page 44: Revision History

    Standard Mounting Drawing 3 Revision History Rev. Date Changes / Comments 1999-12-13 Mounting drawing tables added 1078-2/FEA 209 544/18 C 9(9)
  • Page 45 00021-1/FEA 209 544/18.A Repair Flow Approved according to 1776-1/FEA 209 544 Repair Flow mechanical, R250s pro...
  • Page 46 Repair Flow 00021-1/FEA 209 544/18.A REFERENCE Flash upgrade Test description, mechanical. - Update the phone with the latest software revision if necessary according to the (if needed) instructions. Continue with Manual test. Manual test Test description, mechanical. - To verify the phone all test actions must be performed according the instructions.
  • Page 47 Part List, Mechanical Part List, Mechanical Applicable for R250s PRO Contents Exploded View.........................2 R250s PRO ......................2 Part List ...........................3 R250s PRO ......................3 Revision History ......................4 131 22- 1/FEA 209 544/18 E Approved according to 1776-1/FEA 209 544...

  • Page 48: Exploded View

    Part List, Mechanical 1 Exploded View R250s PRO 131 22- 1/FEA 209 544/18 E 2(4)

  • Page 49: Part List

    Part List, Mechanical 2 Part List R250s PRO Pos. Description Part Number Comments Antenna unit KRE 101 1787/1 External antenna cover SXA 104 6861 Front cover, orange SXK 107 7191 Incl. Loudspeaker, Speaker lever and Keyboard. Front cover, green SXK 107 7191/2 Incl.

  • Page 50: Revision History

    Part List, Mechanical 3 Revision History Rev. Date Changes / Comments 1999-11-24 Convert from FrameMaker to Word Item 25 Part no. changed 2000-02-29 Microphone boot Changed part number. High gain antenna, System bus cover and Strap screw removed. Pos. renumbered. Document title and layout changed.
  • Page 51 R250s Mechanical Trouble Shooting Instruction Approved according to 1776-1/ FEA 209 544 Mechanical Trouble Shooting instruction R250s 4/00021-1/FEA 209 544/18.B...
  • Page 52 R250s Mechanical Trouble Shooting Instruction Contents Appearance problem ................ 3 Network problem ................4 On/Off problem ................. 5 Audio problem .................. 6 Display/Light problem ..............7 Capacity/Charging problem ............8 SIM problem ..................9 Key/ Flip problem ................10 Alert problem .................. 12 Data communication problem ............

  • Page 53: Appearance Problem

    R250s Mechanical Trouble Shooting Instruction 1 Appearance problem ACTIONS • Check the general condition of the System Connector Fig 1 and the Battery Con- nector Fig 2 for corrosion and oxidation. • No action is taken for liquid damaged telephones. Send the unit according to local company directive.

  • Page 54: Network Problem

    R250s Mechanical Trouble Shooting Instruction 2 Network problem ACTIONS • Make a general visual inspection for oxidation, corrosion or liquid damages. No action is taken for liquid damaged telephone, send the unit according to local company directive. • Insert a new SIM card and switch ON the telephone. Check that there is a signal strength shown on the display.

  • Page 55: On/Off Problem

    R250s Mechanical Trouble Shooting Instruction 3 On/Off problem ACTIONS • Make a general visual inspection for oxidation or corrosion from liquid damages. No action is taken for liquid damaged telephone, send the unit according to local company directive. • Check that the battery’s contact surface is free from dust/dirt and mechanical damage.

  • Page 56: Audio Problem

    R250s Mechanical Trouble Shooting Instruction 4 Audio problem ACTIONS Make a general visual inspection for oxidation or corrosion from liquid damages. No action is taken for liquid damaged telephone, send the unit according to local company directive. • Call a network-connected telephone and check if it is the microphone or the loudspeaker that is the cause of the audio problem.

  • Page 57: Display/Light Problem

    R250s Mechanical Trouble Shooting Instruction 5 Display/Light problem ACTIONS • Make a general visual inspection for oxidation, corrosion or liquid damages. No action is taken for liquid damaged telephone, send the unit according to local company directive. • Switch ON the telephone and check the display for missing segments or bad con- trast.

  • Page 58: Capacity/Charging Problem

    R250s Mechanical Trouble Shooting Instruction 6 Capacity/Charging problem ACTIONS • Make a general visual inspection for oxidation, corrosion or liquid damages. No action is taken for liquid damaged telephone, send the unit according to local company directive. • Test the telephone with a fully charged battery. If necessary replace the Battery. •...

  • Page 59: Sim Problem

    R250s Mechanical Trouble Shooting Instruction 7 SIM problem ACTIONS Make a general visual inspection for oxidation or corrosion from liquid damages. No action is taken for liquid damaged telephone, send the unit according to local company directive. • Test the telephone with a new SIM card. •...

  • Page 60: Key/ Flip Problem

    R250s Mechanical Trouble Shooting Instruction 8 Key/ Flip problem ACTIONS • Make a general visual inspection for corrosion or oxidation from liquid damages. No action is taken for liquid damaged telephone, send the unit according to local company directive. • With the telephone ON, press the keyboard buttons 1.
  • Page 61 R250s Mechanical Trouble Shooting Instruction Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 (16) 4/00021-1/FEA 209 544/18.B...

  • Page 62: Alert Problem

    R250s Mechanical Trouble Shooting Instruction 9 Alert problem ACTIONS • Make a general visual inspection for corrosion or oxidation from liquid damages. No action is taken for liquid damaged telephone, send the unit according to local company directive. 9.1 Buzzer problem •...

  • Page 63: Data Communication Problem

    R250s Mechanical Trouble Shooting Instruction 10 Data communication problem ACTIONS • Make a general visual inspection for corrosion or oxidation from liquid damages. No action is taken for liquid damaged telephone, send the unit according to local company directive. • NOTE! all Fax and Data calls are initiated from the appropriate computer soft- ware.

  • Page 64: Software Problem

    R250s Mechanical Trouble Shooting Instruction 11 Software problem ACTIONS If there are problems with the response of the key board commands and/ or spelling errors in the menu, that are not related to mechanical damage, make a software reset and flash the phone with the latest soft ware. If the fault still remains, send the unit according to local company directive.

  • Page 65: Revision History

    R250s Mechanical Trouble Shooting Instruction 12 Revision History Changes Rev. Date 99-09-27 Division into chapters and chapters headings changed. “Send to next/higher level” replaced with “Send the unit according to local company directive.” (16) 4/00021-1/FEA 209 544/18.B...
  • Page 66 R250s Mechanical Trouble Shooting Instruction (16) 4/00021-1/FEA 209 544/18.B...
  • Page 67 Mechanical Working Instructions Mechanical Working Instructions Applicable for R250s Pro Contents Disassembly .........................2 Process tools......................2 Instructions......................2 Figures........................3 Reassembly ..........................4 Process tools......................4 Instructions......................4 Figures........................5 Replacement, Mechanical Parts ..................7 Front cover ......................7 Loudspeaker ......................8 Microphone/Microphone boot................9 Microphone elastomeric connector/ Microphone elastomeric support....10 Buzzer/Buzzer boot .....................11...

  • Page 68: Disassembly

    Mechanical Working Instructions 1 Disassembly Process tools • Torque screwdriver, torx no.7 pre-set to 15 Ncm. • Torque screwdriver, torx no.7 pre-set to 55 Ncm. • Tweezers. Instructions NOTE! Keep all contact-surfaces/display clean of skin oil. Use gloves! NOTE! Do never re-use the disassembled frame screws! 1.

  • Page 69: Figures

    Mechanical Working Instructions Figures Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 Fig 6 Fig 7 Fig 8 3/00021-1/FEA209 544/18 F 3(21)

  • Page 70: Reassembly

    Mechanical Working Instructions 2 Reassembly Process tools • Torque screwdriver, torx no.7 pre-set to 15 Ncm. • Torque screwdriver, torx no.7 pre-set to 55 Ncm. • Tweezers. Instructions NOTE! Every time a telephone is opened you need to replace the microphone-elastomeric connector and the frame screws NOTE! Do not touch the display with your hands.

  • Page 71: Figures

    Mechanical Working Instructions Figures Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 Fig 6 Fig 7 Fig 8 Fig 9 Fig 10 Fig 11 Fig 12 3/00021-1/FEA209 544/18 F 5(21)
  • Page 72 Mechanical Working Instructions Fig 13 Fig 14 Fig 15 3/00021-1/FEA209 544/18 F 6(21)

  • Page 73: Replacement, Mechanical Parts

    Mechanical Working Instructions 3 Replacement, Mechanical Parts Front cover 3.1.1 Process tools • Torque screwdriver, torx no.7 pre-set to 15 Ncm. • Torque screwdriver, torx no.7 pre-set to 55 Ncm. 3.1.2 Instructions • Dismount the phone as described in 1 Disassembly, step 1-4. 1.

  • Page 74: Loudspeaker

    Mechanical Working Instructions Loudspeaker • The loudspeaker in the front cover can’t be replaced. • Follow the front cover replacement. 3/00021-1/FEA209 544/18 F 8(21)

  • Page 75: Microphone/Microphone Boot

    Mechanical Working Instructions Microphone/Microphone boot 3.3.1 Process tools • Tweezers 3.3.2 Instructions • Dismount the phone as described in 1 Disassembly, step 1-4. 1. Remove the microphone from the front cover with a pair of tweezers (fig 1). NOTE! The microphone boot probably gets damaged when dismounting. So always use a new boot when mounting a new microphone.

  • Page 76: Microphone Elastomeric Connector/Microphone Elastomeric Support

    Mechanical Working Instructions Microphone elastomeric connector/ Microphone elastomeric support. 3.4.1 Process tools • Tweezers. 3.4.2 Instructions • Dismount the phone as described in 1 Disassembly, step 1-7. 1. Remove the microphone elastomeric support from the board (fig 1). 2. Make sure that the contact surface on the board not is dirty or oxidised. If necessary use alcohol and a brush to clean it.

  • Page 77: Buzzer/Buzzer Boot

    Mechanical Working Instructions Buzzer/Buzzer boot 3.5.1 Process tools • Tweezers. 3.5.2 Instructions • Dismount the phone as described in 1 Disassembly, step 1-7. 1. Remove the buzzer and the boot from the frame using a tweezers (fig 1). NOTE! The buzzer boot probably gets damaged when dismounting. So always use a new boot when mounting a new buzzer.

  • Page 78: Vibrator/Vibrator Boot

    Mechanical Working Instructions Vibrator/Vibrator boot 3.6.1 Process tools • Tweezers 3.6.2 Instructions • Dismount the phone as described in 1 Disassembly, step 1-7. 1. Remove the vibrator and vibrator boot with a pair of tweezers (fig 1). 2. Take a new vibrator (and a new vibrator boot if needed), and mount it with the flat side up into the specific cavity in the frame.

  • Page 79: Lcd Light Guide Assembly/Speaker Contact Pogo Pins

    Mechanical Working Instructions LCD light guide assembly/ Speaker contact pogo pins 3.7.1 Process tools • Tweezers. 3.7.2 Instructions • Dismount the phone as described in 1 Disassembly, step 1-4. NOTE! Do not touch the LCD with your hands, use gloves, and place a protection tape over the display.

  • Page 80: Lcd Elastomeric/Lcd

    Mechanical Working Instructions LCD elastomeric/LCD 3.8.1 Process tools • Tweezers. 3.8.2 Instructions • Dismount the phone as described in 1 Disassembly, step 1-4. NOTE! Do not touch the LCD with your hands, use gloves, and place a protection tape over the display. 1.

  • Page 81: System Connector

    Mechanical Working Instructions System connector 3.9.1 Process tools • Tweezers. 3.9.2 Instructions • Dismount the phone as described in 1 Disassembly, step 1-7 1. Remove the system connector from the board (fig 1). 2. Mount a new system connector. Make sure that the connector not is turned the wrong way! NOTE! Make sure that the boards contact surfaces are not dirty or oxidised.

  • Page 82: Sim Holder/Sim Card Lid

    Mechanical Working Instructions 3.10 SIM holder/SIM card lid 3.10.1 Process tools • Tweezers. 3.10.2 Instructions • No Disassembly or Reassemble. 1. Remove the battery. 2. Remove the SIM card lid (fig 1). 3. Use a pair of tweezers to remove the SIM holder (fig 2). 4.

  • Page 83: Side Snap Dome Connectors

    Mechanical Working Instructions 3.11 Side snap dome connectors 3.11.1 Process tools Tweezers 3.11.2 Instructions NOTE! Do not touch the contacts with your hands, use gloves. • Dismount the phone as described in 1 Disassembly, step 1-4. 1. Remove the faulty side snap dome connectors from the front (fig 1). 2.

  • Page 84: Speakermode Switch

    Mechanical Working Instructions 3.12 Speaker mode switch • The speaker mode switch in the front cover can’t be replaced. • Follow the front cover replacement. 3/00021-1/FEA209 544/18 F 18(21)

  • Page 85: Antenna/External Antenna Cover

    Mechanical Working Instructions 3.13 Antenna/External antenna cover 3.13.1 Instructions • No Disassembly or Reassemble. 1. Remove the antenna by unscrewing it counter-clockwise (fig 1). 2. Take a new antenna and mount the external antenna cover. 3. Screw the antenna on place and make sure that the external antenna cover is properly fitting. Fig 1 3/00021-1/FEA209 544/18 F 19(21)

  • Page 86: Warranty Seal

    Mechanical Working Instructions 3.14 Warranty seal 3.14.1 Process tools • Tweezers 3.14.2 Instructions 1. Remove the battery 2. Mount the warranty seal over the lower left frame screw (fig 1). Fig 1 3/00021-1/FEA209 544/18 F 20(21)

  • Page 87: Revision History

    Mechanical Working Instructions 4 Revision History Rev. Date Changes / Comments 1999-11-15 Convert from Framemaker to Word 2000-02-14 Torque 20 changed to torx 15. And some minor adjustments 3/00021-1/FEA209 544/18 F 21(21)
  • Page 88 131 30-1/FEA 209 544/18.C Equipment list mechanical Approved according to 1776-1/FEA 209 544 Equipment list mechanical, R250s pro The equipment that listed below are required to repair the R250s pro and to be used when repairing the phone. Item Part number...
  • Page 89 Equipment list mechanical 131 30-1/FEA 209 544/18.C...

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