PT-RZ670, PT-RW630 (serv.man14) - Panasonic Projector Other Service Manuals (repair manual). Page 37

SECTION 1  SERVICE  INFORMATION

< RZ670/RW630 >

A

A

DG-P.C.Board and FM-P.C.Board are easily damaged by static electricity, please be careful as using an antistatic wrist strap.

２

A

 Check the X3501 and peripheral circuit

［Note］

FM  Check the loads on 3.3V and 12V power-supply line

 ●Main microprocessor operation check

FM

 Check the cable connector and flexible cable
    FM1, FM2, FM3
    * Is not bent the pin of connector ?
    * Is not aslant insert of FFC cable ?

 Connect the cable connector properly
    * It replace, if the pin of the connector has bent
    * Replace the flexible cable if there is a vertical line
      noise on the screen

E

a

c

h

 rel

a

y

 board

 Check the cable connector
    Connector of each relay board
    * Is not bent the pin of connector ?

 Connect the cable connector properly
    * It replace, if the pin of the connector has bent

A

 Check in order of the following
    IC3716(FLASH ROM) and peripheral circuits
    IC3721(SRAM) and peripheral circuits
    IC3501(MAIN CPU) and peripheral circuits

 ● DG/FM-P.C.Board operation check

A

 Check the voltage of A1 connector
    1pin : 3.3V, 3pin : 5V

 Check the cable connector between A1 and P6
 Replace the P-P.C.Board

 The voltage of R3826 is 1.2V

 Check the IC3821 and peripheral circuit

A

 Check the clock waveform
    R3622 : 35.455 MHz

DG

 Power-supply line check <1>
    DG1   ： TPDG6 = 3.3V, TPDG7 = 5V
    DG12 ： C6866(+) = 12V, C6894(+) = 3.3V,
                 C6864(+) = 18V

DG

P

 Check the loads on each power-supply line
 Replace the PC-P.C.Board

FM

 Power-supply line check <2>
    FM3 ： TP4001（or DG5  5,6,7pin） = 3.3V

　         

： TP4002 （or DG5 2pin） = Approx 12V

             (TP4002 is RW/RX model only)

DG

 Check the cable connector and flexible cable
  (surface) DG1, DG3-DG14, DG16-DG19
  (rear surface)  DG2 (Board to Board connector)
    * Is not bent the pin of connector ?
    * Is not aslant insert of FFC cable ?

 Connect the cable connector properly
    * It replace, if the pin of the connector has bent

NG

OK

NG

NG

OK

OK

NG

OK

NG

OK

NG

OK

NG

OK

NG

OK

INF - 37