The laser diode in the traverse deck (optical pickup) may break
down due to potential difference caused by static electricity of
clothes or human body.
So, be careful of electrostatic breakdown during repair of the
traverse deck (optical pickup).
l
Handling of CD traverse deck (optical pickup)
1. Do not subject the traverse deck (optical pickup) to
static electricity as it is extremely sensitive to electrical
shock.
2. The short land between the No.4 (LD) and No.5 (GND)
pins on the flexible board (FFC) is shorted with a solder
build-up to prevent damage to the laser diode.
3. Take care not to apply excessive stress to the flexible
board (FFC board) (Fig 4.1).
4. Do not turn the variable resistor (laser power
adjustment). It has already been adjusted.
Fig 4.1
l
Grounding for electrostatic breakdown prevention
1. Human body grounding (Fig 4.2)
Use the anti-static wrist strap to discharge the static
electricity from your body.
2. Work table grounding (Fig 4.2)
Put a conductive material (sheet) or steel sheet on the
area where the traverse deck (optical pickup) is placed,
and ground the sheet.
Caution :
The static electricity of your clothes will not be grounded
through the wrist strap. So, take care not to let your
clothes touch the traverse deck (optical pickup).
Fig 4.2
Caution when Replacing the Optical Pickup :
The traverse has a short point shorted with solder to protect
the laser diode against electrostatics breakdown. Be sure to
remove the solder from the short point before making
connections.
4 Handling Precautions For Traverse Deck
8
SA-PM33EE
Summary of Contents for SA-PM33EE
Page 11: ...7 Operating Instructions Procedures 7 1 Main Unit Remote Control Operation 11 SA PM33EE ...
Page 12: ...7 2 Disc Information 12 SA PM33EE ...
Page 21: ...9 3 Main Parts Location Diagram 21 SA PM33EE ...
Page 30: ...30 SA PM33EE ...
Page 31: ...31 SA PM33EE ...
Page 35: ...35 SA PM33EE ...
Page 38: ...11 2 Checking and Repairing of Panel P C B 38 SA PM33EE ...
Page 39: ...11 3 Checking and Repairing of Tuner Pack P C B 39 SA PM33EE ...
Page 40: ...11 4 Checking and Repairing of Transformer P C B 40 SA PM33EE ...
Page 41: ...11 5 Checking and Repairing of Main P C B 41 SA PM33EE ...
Page 42: ...11 6 Checking and Repairing of CD Mechanism P C B 42 SA PM33EE ...
Page 43: ...11 7 Checking and Repairing of Speaker Terminal P C B 43 SA PM33EE ...
Page 44: ...11 8 Checking and Repairing of Power P C B 44 SA PM33EE ...
Page 46: ...Fig 7 46 SA PM33EE ...
Page 56: ...SA PM33EE 56 ...
Page 60: ...SA PM33EE 60 ...
Page 62: ...62 SA PM33EE ...
Page 70: ...SA PM33EE 70 ...
Page 81: ...22 Troubleshooting Flowchart CD Section Circuit 81 SA PM33EE ...
Page 82: ...82 SA PM33EE ...
Page 83: ...23 Exploded Views 23 1 Cabinet Parts Location SA PM33EE 83 ...
Page 84: ...23 2 Cassette Deck RAA4402 1S Traverse Deck Part Location SA PM33EE 84 ...
Page 85: ...23 3 Packaging SA PM33EE 85 ...
Page 86: ...SA PM33EE 86 ...