— 9 —
4 HANDLING THE OPTICAL PICK-UP
The laser diode in the optical pick up may suffer electrostatic
breakdown because of potential static electricity from clothing and
your body.
The following method is recommended.
(1) Place a conductive sheet on the work bench (The black sheet
used for wrapping repair parts.)
(2) Place the set on the conductive sheet so that the chassis is
grounded to the sheet.
(3) Place your hands on the conductive sheet (This gives them the
same ground as the sheet.)
(4) Remove the optical pick up block
(5) Perform work on top of the conductive sheet. Be careful not to
let your clothes or any other static sources to touch the unit.
◆
Be sure to put on a wrist strap grounded to the sheet.
◆
Be sure to lay a conductive sheet made of copper etc. Which is
grounded to the table.
Fig.3
(6) Short the short terminal on the PCB, which is inside the Pick-
Up ASS’Y, before replacing the Pick-Up. (The short terminal is
shorted when the Pick-Up Ass’y is being lifted or moved.)
(7) After replacing the Pick-up, open the short terminal on the PCB.
THE UNIT
WRIST-STRAP
FOR GROUNDING
1M
1M
CONDUCTIVE SHEET
Summary of Contents for RDR-GX255
Page 36: ...1 26E MEMO ...
Page 40: ...2 4E MEMO ...
Page 42: ...3 4E MEMO ...
Page 44: ...4 1 DVD Main PCB 4 4 4 3 COMPONENT SIDE ...
Page 45: ...4 6 4 5 CONDUCTOR SIDE ...
Page 46: ...4 8 4 7 4 2 Front Main PCB COMPONENT SIDE ...
Page 47: ...4 10 4 9 CONDUCTOR SIDE ...
Page 48: ...4 12E 4 11 4 3 Function Timer PCB COMPONENT SIDE CONDUCTOR SIDE ...
Page 50: ...5 4 5 3 5 1 S M P S Front Main PCB ...
Page 51: ...5 6 5 5 5 2 Power Front Main PCB ...
Page 52: ...5 8 5 7 5 3 Logic Front Main PCB ...
Page 53: ...5 10 5 9 5 4 Function Jack VCR Front Main PCB ...
Page 54: ...5 12 5 11 5 5 MPEG Decoder DVD Main PCB ...
Page 55: ...5 14 5 13 5 6 A V Decoder DVD Main PCB ...
Page 56: ...5 16 5 15 5 7 In Out DVD Main PCB ...
Page 57: ...5 18 5 17 5 8 ATSC DVD Main PCB ...
Page 58: ...5 20 5 19 5 9 Tuner DVD Main PCB ...
Page 59: ...5 22 5 21 5 10 DV HDMI DVD Main PCB ...
Page 60: ...5 24E 5 23 5 11 Front Panel Function Timer PCB ...
Page 77: ...7 1 RDR GXD455 7 REPAIR PARTS LIST 7 1 Exploded Views 7 2 7 2 Electrical Parts List 7 3 ...