Kenwood TR-7625 Service Manual page 25

TR-7625
ADJUSTMENTS
Measuring point Adjust
Item Condition L Reference Remarks
Instrument] Unit | Terminal | Unit Parts Method
fe
4) Hi/LOW SW: HI
6) MHz SW: 7
100 kHz SW: 9
10 kHz SW: 9
9 Frequency|_1)DC input: 13.8V
check 2) MHz SW: 6
10 kHz SW: O
10. Protection | 1) Connect the Power
DC VTVM] TX.RX|
TP4
TX.RX | VR5
MIN (Null)
VR8: Full counter-
clockwise Antenna
shorted to ground
5) Connect the power POWER.MI rear
meter to the
ANT
RF output to spec.
100 kHz SW: O
10 kHz SW: O
AG OUTPUT: 30 mV/
1 kHz
2) AG OUTPUT: 3 mV/ Linear
1 kHz Detector
12. SUBTONE|
1) MIC Terminal: OPEN
SUB
1) Check that output
|AG output applied to
SEND/REC. SEND
GND"
waveform from the |SUB and GND terminal.
AG OUTPUT:
300 mV/| Linear
Linear Detector
1 kHz
Detector
2) Confirm that TV
SUBTONE SW: ON
TB..DC
Terminal Voltage is
| VTIVM approx. 10V
still turning point.
Confirm
Linear
TX.RX| VR1 3.5 kHz DEV.
13. Abnormall 1) Same as above
Oscillat-
| 2) HI/LOW SW: LOW
Vary the supply
ion 3) MHz SW:
4 Linear
voltage
4) HI/LOW SW: HI Detector
from 11.5 to 16 V for
5) MHz SW: 7
each item to check for
100 kHz SW: 9
abnormal oscillation
10 kHz SW: 9
or operation
6) HI/LOW SW:
LOW
=
14. Shift & 1) MHz SW: 5
Memory 100 kHz SW: O
Shift 10 kHz SW: O
5 kHz SW: 0
HI/LOW SW: HI
F. Counter | rear
ANT.
144.400 MHz
Confirm
13.8V DC panel TERM.
MODE SW: ©
SEND/REC. SW: se
MR SW: OFF
2) MODE SW: ©
145.000 MHz Confirm
3) MHz SW: 7
MODE SW: ©
4) MODE SW. ®
146.400 MHz Confirm
147.600 MHz Confirm
5) MODE SW: S
M SW (NON-LOCK)
ON
25