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Casio IT-G400 Disassembly/Assembly

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Precautions Before Disassembling Parts
• When reassembling the parts, reverse the disassembly procedures.
If [ Note on reassembling ] is stated, be sure to follow it.
• Use the right screwdriver according to the screw diameter.
• When disassembling or reassembling parts, do not pinch or damage wires.
• When reassembling FPC (cable), be sure that its orientation is correct. The contacts of the FPC are on one side
only.
Tool list
The following tools are necessary when replacing maintenance parts.
No.
1
#0 precision screwdriver (Phillips head)
2
#1 precision screwdriver (Phillips head)
3
Tweezers
4
Special screwdriver (Torx head)
Flow
1. Removing the LOWER CASE BLOCK
2. Removing the BRACKET BLOCK
3. Removing the MAIN PCB
4. Removing the IO ASSY
5. Removing the LCD BLOCK
Disassembling the UPPER CASE BLOCK
DISASSEMBLY/ASSEMBLY
Item
Disassembling the LOWER CASE BLOCK
Disassembling the BRACKET BLOCK
Disassembling the BRACKET/LCD
– 1 –
IT-G400 / VER.1

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Summary of Contents for Casio IT-G400

  • Page 1 IT-G400 / VER.1 DISASSEMBLY/ASSEMBLY Precautions Before Disassembling Parts • When reassembling the parts, reverse the disassembly procedures. If [ Note on reassembling ] is stated, be sure to follow it. • Use the right screwdriver according to the screw diameter.
  • Page 2 IT-G400 / VER.1 1. Removing the LOWER CASE BLOCK (1) Slide the battery cover lock switch to the “Unlock” position ( ) and remove the COVER ASSY/BATTERY.  (2) Remove the battery pack, microSD card and SIM card (dummy card).
  • Page 3 IT-G400 / VER.1 (4) Remove the LOWER CASE BLOCK. There is small hook (2 place) on only bottom side. Disassembling the LOWER CASE BLOCK KEY-POWER KEY-SCANNER KEY-VOLUME CAP/EARPHONE NOTE: These parts come off when the LOWER CASE BLOCK is removed.
  • Page 4 IT-G400 / VER.1 Y Disassembling the LOWER CASE BLOCK FILTER/CAMERA LABEL/CAUTION CASE-ASSY/LOWER D-TAPE/FILTER/CAM LABEL/RATING SHEET/EJECT : BLANK O-RING D-TAPE/SHEET/EJECT – 4 –...
  • Page 5 IT-G400 / VER.1 2. Removing the BRACKET BLOCK (1) Remove the FPC/LED. NOTE: The FPC/LED is secured by adhesive. Reuse the adhesive at reassembly. (2) Remove the FPC/SPEAKER. NOTE: The FPC/SPEAKER is secured by adhesive. Reuse the adhesive at reassembly.
  • Page 6 IT-G400 / VER.1 (7) Open the BRACKET BLOCK. (8) Disconnect the connector of the vibrator. Connector Model without WAN Model with WAN ANTENNA-DUMMY ANTENNA-DIVERSITY Disassembling the BRACKET BLOCK – 6 –...
  • Page 7 IT-G400 / VER.1 Y Disassembling the BRACKET BLOCK D-TAPE/ANTENNA D-TAPE/REAR-CAMERA FPC/REAR-CAMERA ANTENNA-DUAL MIC/RUBBER VIBRATOR – 7 –...

  • Page 8: Removing The Main Pcb

    IT-G400 / VER.1 3. Removing the MAIN PCB (1) Peel off the tape (8 pcs.). NOTE: Three diff erent kinds of tapes are used. Need to use new tape at reassembly. TAPE-MIDDLE (3 pcs) TAPE-SMALL (3 pcs) TAPE-LARGE (2 pcs) (2) Release the connector lock and remove the FPC/MIC.
  • Page 9 IT-G400 / VER.1 (6) Release two connectors. (7) Release the connectors. NOTE: The connector is secured by double-face tape. Reuse double-face tape at reassembly. (8) Remove the SUB-BATTRY. NOTE: The SUB-BATTERY is secured by double-face tape. [ Note on reassembling ] Please attach the SUB-BATTRY after screwing the MAIN PCB.
  • Page 10 IT-G400 / VER.1 (10) Remove the PCB ASSY/MAIN. (11) Release the connectors. (11) Connector PCB ASSY/MAIN – 10 –...
  • Page 11 IT-G400 / VER.1 4. Removing the IO ASSY (1) Remove the GASKETTAPE. (2) Undo two screws. GASKETTAPE Screw (S5) (3) Remove the ASSY/IO. NOTE: The ASSY/IO is fi xed by double-face tape (3 pcs.). NOTE: EMI tape has damage during disassemble and need to use new IO Assy.
  • Page 12 IT-G400 / VER.1 5. Removing the LCD BLOCK (1) Remove the FPC. NOTE: The FPC is secured by double-face tape. (2) Remove the BRACKET/LCD. NOTE: Since the hooks are hardly engaged, release them using a fl at-blade screwdriver or the like.
  • Page 13 IT-G400 / VER.1 [ Note on reassembling ] First, insert the upper part of the UPPER CASE BLOCK, and then assemble it while paying attention to the FPC of the LCD BLOCK. [ Note on reassembling ] Make sure that no dirt or dust is on the LCD surface.
  • Page 14 IT-G400 / VER.1 (5) Remove the CUSHION/LCD. MODULE/LCD CUSHION/LCD Y Disassembling the BRACKET/LCD RECEIVER RECEIVER/RUBBER FPC/FRONT-CAMERA 2D-MODULE LED/RUBBER FPC/2D-MODULE SENSOR/RUBBER Screw (S6) FPC/KEY-POWER FPC/KEY-VOLUME MIC/RUBBER – 14 –...
  • Page 15 IT-G400 / VER.1 A Remove the FPC/FRONT-CAMERA. NOTE: The FPC/FRONT-CAMERA is secured by double-face tape. FPC/FRONT-CAMERA B 2D-MODULE, FPC/2D-MODULE (1) Undo two screws. (2) Remove the 2D-MODULE. Screws (S6) (3) Release the connectors. FPC/2D-MODULE Connector 2D-MODULE – 15 –...
  • Page 16 IT-G400 / VER.1 C Remove the RECEIVER. [ Note on reassembling ] Pay attention to the mounting orientation. RECEIVER/RUBBER RECEIVER D Remove the LED/RUBBER. NOTE: The LED LENS is not included in the LED/RUBBER. [ Note on reassembling ] When assembling the LED LENS, pay attention to the mounting orientation.
  • Page 17 IT-G400 / VER.1 Y Disassembling the UPPER CASE BLOCK FILTER/2D D-TAPE/FILTER/2D O-RING/KEY CASE-ASSY/UPPER – 17 –...