PT4208 Service Manual
12
Figure 5.5
5.4 Remove the main board from the Al chassis
1) Remove the screws from the PCB board by a cross
screwdriver;
2) Remove the solder of the antenna terminal with a
soldering iron. Then take off the main board.
Refer to Figure 5.6
Figure 5.6
After the aforesaid disassembly, you can repair and
adjust the radio according to its actual malfunction.
1
2
3
4
5
6
8
9
10
17 18
19
20
21
22
11
12
13
14
15
16
23 24 25
27
28
29
30
31
7
26
32 33
34
35
37
36
Figure 5.7 Exploded View
No.
Part No.
Description
PCS
1 710-420470-R06 Antenna
1
2
201-004208-R07
Channel Selector Knob
1
3 201-004208-R06 Volume
Knob
1
4 203-003208-R09 Circlip
2
5 203-007200-R07 Nut
for
Antenna
Socket 1
6
203-000558-R02
Nut for Knob
2
7 201-004208-R09 Light
Guide
1
8 201-004208-R01 Front
Cabinet
1
9
201-004208-R08
Earphone Jack Cover
1
10
301-25080J-R01 Screw
M2.5*8.0
1
11
202-004208-R01 Main
Waterproof
1
12
201-004208-R02 Coping
1
13
301-25050J-R01 Screw
M2.5*5.0
2
14
202-007200-R07 Rubber
Plug
2
15
203-000558-R05
Spring for Battery Latch
1
16
201-004208-R03 Battery
Latch
1
17
204-003208-R02
Dust-proof Net for Speaker
1
18
202-004208-R02
Rubber PTT Key
1
19
201-004208-R04 PTT
Key
1
20
121-100000-R20 Speaker
1
21
301-20040G-R01 Screw
M2.0*4.0
12
22
602-04208X-HXX
Main Board
1
23
201-004208-R05
POGO Pin Socket
1
24
203-004208-R02 Earphone
Plate
1
25
203-000558-R07 Antenna
Socket
1
26
204-004208-R02
Dust-proof Net for MIC
1
27
202-007200-R06 POGO
Pin
Waterproof
1
28
203-004208-R01 Al
Chassis
1
29
301-20080G-R02 Screw
M2.0*8.0
2
30
204-007200-R03
Sponge for POGO Pin
1
31
706-0KB70B-R01
Battery 1
32
202-004208-R03 MIC
Rubber
Waterproof 1
33
120-100000-007 Plastic-packaged
Wire
1
34
120-100000-008 Plastic-packaged
Wire
1
35
202-003208-R07 Heat Exchange Silicone
Rubber Washer
1
36
204-006500-R02
MIC Socket Guardian
1
37
204-0KB36L-R03
Sponge Cushion
1
Chapter 6 Adjustment
Before test/adjustment, make sure all equipment has
been well connected to the ground!
Before test/adjustment, make sure the antenna output
terminal has been correctly connected to corresponding
equipment or load!
The transmitter output terminal must be terminated with
Summary of Contents for PT4208
Page 1: ......
Page 35: ......
Page 36: ......
Page 39: ...PT4208 Service Manual 38 Figure 7 PT4208 Main Board Top Layer Layout 420 470MHz ...
Page 40: ...PT4208 Service Manual 39 Figure 8 PT4208 Main Board Bottom Layer Layout 420 470MHz ...
Page 46: ...PT4208 Service Manual 45 Figure 14 PT4208 Main Board Top Layer Layout 136 174MHz ...
Page 47: ...PT4208 Service Manual 46 Figure 15 PT4208 Main Board Bottom Layer Layout 136 174MHz ...
Page 48: ...PT4208 Service Manual 47 Figure 16 KBC 70C Schematic Circuit Diagram ...
Page 49: ...PT4208 Service Manual 48 Figure 17 KBC 70C Top Layer Position Value Diagram ...
Page 50: ...PT4208 Service Manual 49 Figure 18 KBC 70C Top Layer Position Mark Diagram ...
Page 51: ...PT4208 Service Manual 50 Figure 19 KBC 70C Bottom Layer Position Value Diagram ...
Page 52: ...PT4208 Service Manual 51 Figure 20 KBC 70C Bottom Layer Position Mark Diagram ...
Page 53: ...PT4208 Service Manual 52 Figure 21 KBC 70C Layout ...