Kenwood TS-440S Serivce Manual page 25
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Also See for TS-440S:
- Service manual (131 pages) ,
- Instruction manual (58 pages) ,
- Service manual (116 pages)
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TS-440S
CIRCUIT DESCRIPTIO N
t
16 . Semi-self test functio n
Semi-self test is started by turning the POWER switch o n
with the 4 (AM) and T-F SET switches pressed .
This test provides a method of testing the TS-440 digita l
system in a shorter time during production or servicing . Th e
test enables the following :
1. Circuits which are difficult to test during program execu-
tion to be tested easily . For example, dynamic data ca n
be ouput as static data .
2. Items on which information is held only by the CPU an d
is not available to the user to be tested .
a. Approximately threshold level inpu t
b. Incorrect input due to input pin faul t
Operation procedure
1 . POWER SW OF F
2 . The power switch on while pushing switch 4 (AM) an d
switch T-F SE T
3. The test number has starts from "0" to "56" and EN D
when turn the VFO knob clockwise .
Operation chart shows as follow .
4. To reset SEMI-SELF TEST function, Power switch OFF .
TEST NO . LIST
TEST
NO
Condition
TES T
NO
Conditio n
0
Start All Fip's light's
31
RES = "H "
All Fip's light's (Segment)
32
2
All Fip's light's
33
CO = "H" (AID )
3
All Fip's OFF (digit)
34
„
= "L" I "' )
q
Each digit lights G1
35
AX = "H" ( " 1
5
G2
36
="'L"
(
)
6
"
G3
37
8255 Port A all = "H" (IC2 )
7
G4
38
"
"
all = "L"
(– 1
8
G5
39
8255 Port B all = "H"
(• , 1
9
G6
40
„
"'
all ="L"
(„ )
10
„
G7
41
8255 Port C CO-C3="H" 1,, )
11
C4–C7 ="L "
" "
G8
42
CO–C3="L" (•• 1
2
G9
43
C4–C7="H "
8255 Port C all= "H" (IC53 )
13
G10
44
all= "L"
(•• )
14
G11
45
LOCK,PTT,MIC,U/D,AT,VS-1(BUSY)chec k
15
G12
46
[SIMPLEX] VS-1(BUSY)chec k
16
"
G13
47
Key scan inport chec k
17
BZ
ON
48
1
(LSB), [6
,V/M,VOICE (check )
8
BZ
OFF
49
2
(USB),
,M/V,RIT,A/B (check )
19
Mode LED all ON
50
3
(CWI, ] ,SCAN,XIT,SPRIT (check )
20
all OFF
51
] (AM),
9 ,MIN,T-FSET,A=B,100L 200L 400L (•• )
21
RL
="H"
52
I5
(FM),
0 ,(FSK),CLEAR,IMHz,25L 50L 25U 50 U
22
53
ENT,DOWN,UP, 100U 200U 400 U
23
BAND all = "H"
54
–
24
all = " L "
55
—
25
PD
="H'•
56
EN D
2 6
27
ENF
= •'H "
28
= "L" (immediatly )
29
EN P
30
2 5
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