23
4-5 Preparations for assembling
1. Tools (supply the tools shown in the following tables)
Check Name
Remarks
Soldering iron
15 to 20 W
Tweezers
Small
size
Nipper
Small
size
Check Name
Remarks
Phillips screwdriver Medium
size
Slotted head screwdriver for
adjustment use: small size
(Blade: 2-2.2 mm in width and 0.4
mm max. in thickness)
2. Checking components
(Check the kinds and quantities of components by referring to the component names shown in
Fig. 4-6 on page 24 through Fig. 4-19 on page 30.)
1
Instruction manual for assembling (1)
2
A set of components with a paper board (1)
3
Test leads (1 set of red and black ones)
Check that each component is mounted on the corresponding name shown on the board.
Each 2 pieces of spark gaps, fuse folders and battery terminals are supplied.
Remove the temporarily assembled panel and rear case and also remove the batteries placed
in the rear case. Remove the printed circuit board (small) that is temporarily attached to the
panel with screws (M3 x 8). Store the removed screws (M3 x 8), which will be used in the
process described in 4-9. Remove the printed circuit board (large) by extending its pawls.
4
Components mounted on paper board
(temporarily assembled components)
5
Component in bag
6
Panel (Fig. 4-11) and components mounted on the panel
Switch knob
Brush mount (2 pieces of 2P brushes and 1 piece of 4P brush)
Spring arm (with coil spring)
7
Rear case (Fig. 4-16) and mounted components
Dry cell (Fig. 4-17): 2 pieces of R6 type in a pack are temporarily placed.
Stand (Fig. 4-18)
Rectangular rubber foot (Fig. 4-16)
Check
Reference
drawing
Name of component
Q'ty
Fig. 4-10
Printed circuit board
(small) with
measurement connector
1
Fig. 4-6
Printed circuit board (large)
with circuit components
1
Fig. 4-8
Battery pad
1
Fig. 4-12 Zebra-striped connector
1
Fig. 4-11 Readout (LCD)
1
Fig. 4-12 Rubber switch
1
Fig. 4-15 Dial
1
Check
Reference
drawing
Name of component
Q'ty
Fig. 4-16 Warning label
1
Fig. 4-16
Dial A (translucent,
purple-colored)
1
Fig. 4-16 Round rubber foot
2
Fig. 4-15 Safety cover
1
Fig. 4-10 Connector cover
2 red ones
1 black one
Fig. 4-7
Buzzer
1
Fig. 4-18 Screw M3 x 22
1
Fig. 4-15 Screw M2 x 8
1
Fig. 4-19
Oval seal (1 piece
for spare)
2
Fig. 4-14 Banding Band
3
Содержание PC20TK
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