3-3
TVP_SN
2. Installation
1. Using desoldering braid, remove the solder from
the foil of each pin of the flat pack-IC on the CBA
so you can install a replacement flat pack-IC more
easily.
2. The “
I
” mark on the flat pack-IC indicates pin 1.
(See Fig. S-1-7.) Be sure this mark matches the
pin 1 on the PCB when positioning for installation.
Then presolder the four corners of the flat pack-IC.
(See Fig. S-1-8.)
3. Solder all pins of the flat pack-IC. Be sure that
none of the pins have solder bridges.
Instructions for Handling Semi-
conductors
Electrostatic breakdown of the semi-conductors may
occur due to a potential difference caused by
electrostatic charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1 M
Ω
) that is
properly grounded to remove any static electricity that
may be charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate
with proper grounding (1 M
Ω
) on the workbench or
other surface, where the semi-conductors are to be
placed. Because the static electricity charge on
clothing will not escape through the body grounding
band, be careful to avoid contacting semi-conductors
with your clothing.
Example :
Pin 1 of the Flat Pack-IC
is indicated by a " " mark.
Fig. S-1-7
Presolder
CBA
Flat Pack-IC
Fig. S-1-8
<Incorrect>
CBA
Grounding Band
Conductive Sheet or
Copper Plate
1M
Ω
1M
Ω
<Correct>
CBA
Summary of Contents for LT850-M32 - SERVICE
Page 13: ...4 2 A0CF0DC_rev 2 Rear Cabinet 1 Stand Assembly S 4 S 4 S 2 S 3 S 2 S 2 S 2 S 1 S 5 Fig D1...
Page 36: ...10 4 A0CF0SCP2 Power Supply 2 Schematic Diagram...
Page 37: ...10 5 A0CF0SCP3 Power Supply 3 Schematic Diagram...
Page 39: ...10 7 A0CF0SCF Function IR SENSOR Junction Schematic Diagram...
