VHF FM TRANSCEIVER
TK-190
SERVICE MANUAL
REVISED
© 2001-2 PRINTED IN JAPAN
( )
B51-8510-10 S 858
CONTENTS
GENERAL ................................................................. 2
SYSTEM SET-UP ..................................................... 2
OPERATING FEATURES ......................................... 3
REALIGNMENT...................................................... 10
CIRCUIT DESCRIPTION......................................... 12
SEMICONDUCTOR DATA..................................... 20
DESCRIPTION OF COMPONENTS ....................... 22
PARTS LIST............................................................ 24
EXPLODED VIEW .................................................. 31
PACKING ................................................................ 32
DISASSEMBLY FOR REPAIR ................................ 33
ADJUSTMENT ....................................................... 34
PC BOARD VIEWS
Antenna
(KRA-21:Option)
Knob assy (SEL)
(K29-5282-04)
Knob assy (VOL)
(K29-5283-04)
Panel assy
(A62-0779-03)
FINAL UNIT (X45-3610-10) ............................... 43
CONTROL UNIT (X53-3930-10) ........................ 43
TX-RX UNIT (X57-608X-XX) ............................ 47
SCHEMATIC DIAGRAM ........................................ 53
BLOCK DIAGRAM.................................................. 59
LEVEL DIAGRAM................................................... 61
TERMINAL FUNCTION ......................................... 62
KNB-17A (Ni-Cd BATTERY) .................................. 63
KMC-25A (SPEAKER MICROPHONE) .................. 64
KSC-19 (CHARGER)............................................... 65
KSC-20 (RAPID CHARGER) ................................... 65
KPG-36 (PROGRAMMING INTERFACE CABLE) ..... 65
KBP-4 ....................................................................... 65
SPECIFICATIONS............................... BACK COVER
Knob assy
(Side key)
(K29-5423-04)
Cabinet assy
(A02-2139-63)
CAUTION
Photo is TK-190 K type.
Does not come with antenna.
Antenna is available as an option.
When using an external power connector,
please use with maximum final module protec-
tion of 10V
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TK-190
OPERATING FEATURES
You can use these features, using the programming soft-
ware (KPG-59D). Selector function is selectable channel se-
lect or group select.
5-9. Key Lock
Pressing this key causes the transceiver to accept an en-
try of only the [Shift], [KeyLock], [PTT], [Emergency] keys,
[Selector switch], [Volume], [Toggle], [Lamp], [Moni], [Moni
monentary], [SQ off], [SQ momentary] and [SP Attennation]
"Lock" is used to prevent users from unexceptable key
press which might cause a transceiver malfunction. The dis-
play does not change while the key is being locked.
Pressing Key Lock again cancels the key lock. Key locked
transceiver can still receive. Pressing this key while scan-
ning, keys are locked but a scanning continues.
The functions for Toggle switch are listed page 7 (Fig. 2).
Right position is active for programmed function on toggle
switch except "group select".
The functions for the top key are listed page 7 (Fig.2).
Hold action and shift action are programmable.
The functions for side key are listed page 7 (Fig.2). Hold
action and shift action are programmable.
The functions for microphone key are listed page 7
(Fig.2). Hold action is programmable.
5-10. Lamp
5-1. No Function
Press this key, the transceiver illuminates the display and
back lit approximate 5 seconds. Press this key again, the
transceiver stops the illuminating.
Sounds error operation beep, and no action will occur.
Use this function when the transceiver is required to be
more simple operated.
Pressing any key except the LAMP key while the illumi-
nated restarts the 5 second timer.
5-2. AUX.
This function can be programmed when the voice scram-
bler board is not installed.
If this key is pressed, "AUX" icon lights on the LCD and
"CLR/C" port which is inside of the transceiver turns to the
high level. If pressed again, the "AUX" icon goes off and the
"CLR/C" ports turns to the lower level.
5-11. Low Power
Press this key, the transmission power of all channel
changes to Low. Press this key again, the transmission
power returns to programmed value.
5-12. Monitor
Monitor the channel before a transmission.
Press this key once, "MON" appears and unmutes
speaker if a carrier is present, regardless of the specified
signalling (including option signalling). Press this key again,
"MON" disappears and mutes speaker.
5-3. Channel Down
If this key is pressed once, the channel number de-
creases by one step. If this key is hold down, the channel
number decreases continuously.
Press this key after the Option Signalling is matched, the
Option Signaling is reset. DBD (Dead Beat Disable) mode is
not reset by this operation.
5-4. Channel Up
If this key is pressed once, the channel number increases
by one step. If this key is hold down, channel number in-
creases continuously.
5-13. Monitor Momentary
While pressing this key, the monitor function (refer 5-12)
is activated. Release this key, the monitor function is de-
activated.
5-5. Channel Name
This key switches the LCD display between the current
channel number and programmed channel name.
5-14. Operator Selectable Tone
5-6. Delete/Add
This key switches the currently displayed channel be-
tween "Delete" and "Add".
The "Add" channel contained in the scan sequence, and
"Delete" channel is not contained. In the scan mode, this
key switches the channel delete or add temporarily.
This key switches the pre-set decode QT/DQT and en-
code QT/DQT to OST (Operator Selectable Tone) tone pair.
Press this key, the transceiver enters to OST select
mode. In this mode, the display shows "OFF" and the opera-
tor can select one of the OST tone pair using the Side 1/Side
2 key. The display shows "TONE ∗∗" and tone pair No. ∗∗ is
selected or OST name.
Press OST key again, the transceiver exits from the OST
select mode, and returns to the channel mode with "OPT"
icon. "OPT" icon means that the OST tone pair is selected.
OST tone pair number or OFF can be memorized for each
channel.
5-7. Home Channel
Press this key once, the channel switches to the pre-pro-
grammed home channel. Press this key again, the channel
goes back to the previous channel.
16 kinds of tone pair for OST can be programmed by
KPG-59D. OST is useful to access the repeater with same
radio frequency and different tone (QT/DQT).
5-8. Invert Display
Press this key once, the displayed the channel number or
channel name are inverted. Press this key again, the display
returns to the normal.
For the operator who does not change the display and
needs "Invert" only, refer "Invert Display" setting of optional
feature.
8
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D
E
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I
J
K
L
M
N
O
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R
S
1
2
TK-190 PC BOARD VIEWS
FINAL UNIT (X45-3610-10) Component Side View
CONTROL UNIT (X53-3930-10 B/6,D/6,E/6,F/6) Component Side View
B/6
E/6
Q2
SW B
SW A
C5
G
G
S
D
3
TH1
FINAL UNIT
Q1
S
(Component side)
D/6
D
Ref No. Address
C8
C6
Q1
Q2
3D
2D
F/6
TOGGLE SW
TGL
X45-3610-10
J72-0717-02
4
C10
GND
Component side
Foil side
CONTROL UNIT B/6
(Component side)
Pattern 1
Pattern 2
Ref No. Address
5
D102
D103
D104
3M
3Q
4Q
CONTROL UNIT (X53-3930-10 A/6) Component Side View
6
MIC
+
–
7
8
9
10
11
12
13
X53-3930-10 (A/6)
J72-0705-02
Component side
2SK3075
Pattern 1
Pattern 2
Pattern 3
Pattern 4
Foil side
43
44
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