TOSHIBA - 46HM84_46HMX84_52HM84_52HMX84_ 62HM84_62HMS84_ SUB POWER SUPPLY DISASSEMBLY

Disassambly or Toshiba DLP model 52HM94 is similar to that of model 52HM84, with exceptions regarding removal of the Digital [Scine_DSB_SHU153U] and sub power supply modules.  

H94 CHASSIS TYPE.

H84 CHASSIS TYPE

• After the back has been removed and front panel pulled straight off, detach connectors PC01, PB91 and PV60 from the keyboard, front AV input and memory card PC boards.  Detaching these connectors simplifies removal of the chassis ass'y, as the opposite ends of keyboard and card reader cables are connected at the under side of the Digital module and are difficult to remove with the module in place.

• Pull the cables and attracted ferrite core removed from the front control panel through the hole in the front cabinet. 

LIGHT ENGINE DISCONNECTION

• Disconnecting and moving the light engine allows access easy.  Once completed, the light engine and chassis block can be removed from the cabinet as individual sections.

• After the chassis has been removed away from the light engine to gain access to the front of the chassis, remove the cable tie securing the ballast power and thermal circuit breaker wires to the locking clip.  Detach the connectors from the main power baord.

• Disconnect Lamp exhaust fan, DMD fan and door switch from the main power board.

• Remove speaker and IR blaster wires from the retaining clip on the right shield above the light engine projection lens.

• Disconnect CN101[red], CN102[blue] and CN103[yellow] from the DMD PC board.

• Disconnect the LVDS cable from digital module by gently squeezing the connector clamps, and disconnect the cable.  Verify that the positioning of copper tape does not bet itself to short circuiting the connector pins.  Verify this point again during re-assembly process.

• Remove all cables from the clamps on the front brace.  The cables  to attached to the front panel are were removed earlier. Cut the two cable ties securing the power supply cables to the brace.  Remove the large, self tapping screw securing the cross section to the front brace.

• Remove 4 large screws securing the front brace to the left and right sides of the chassis.

• Remove 1 medium pan head self tapping screw and 1 large self tapping screw securing the Digital module to the chassis.

• Remove 2 small machine screws and one small self tapping screw from the rear A/V connector.

• Remove; but do not discard; the aluminium tape securing the RF Switching Module coaxial cables to the top of the digital module. 

• Disconnect 2 coaxial cables from the RF switching module.  The cables connect to the ATSC tuner inside the digital module.

• Disconnect main power and AV board ribbon cables, sub power cables, main power cable, memory card cable and IR blaster cable.