Level Diagram - Kenwood TK-290 Service Manual

ADJUSTMENT
Measurement
Item Condition
Test-
equipment
9. Squelch 1) Set panel test mode SSG
adjustment CH No. : 3
(narrow) Signalling No. : 1 AF VTVM Side
Select SQ O Oscilloscope
in panel tuning mode Distortion
Turn the toggle SW to the meter
right (narrow) Audio
SSG output : 3dB below to analyzer
12dB SINAD level
10. Squelch 1) Set panel test mode
check CH No. : 3
(wide) Signalling No. : 1
SSG output : –118dBm/0.28µV
2) SSG output : –127dBm
11. Squelch 1) Set panel test mode
check CH No. : 3
(narrow) Signalling No. : 1
Turn the toggle SW to the
right (narrow)
SSG output : –118dBm/0.28µV
2) SSG output : –127dBm/0.1µV
Adjustment Point
Foil side
L205
L201 L202
L206
IC10
X1
IC406
TK-290
Adjustment
Specifications/Remarks
Unit Terminal Unit Parts Method
Panel ANT Panel Top1/ Adjust to point of
Top2 opening squelch
Universal
Check Squelch must be opened
Squelch must be closed
Check Squelch must be opened
Squelch must be closed
Component side
E
E E
TP8
TP9
TP7
E
TP3
B+
E
IC607
X600 IC603
E
TP1
TP2
5R
5C
5T
TP6
5M
SELF
E
TP5
TP4
SENS. B
TK-290

LEVEL DIAGRAM

47
48