Kenwood TS-990S Service Manual page 196

TS-990S
Item Condition
Final idling 2) Main display f.:
current 51.990000MHz
Mode: USB
Final unit (A/2) VR1~4: MIN
Transmit
Disconnect the lead wire with
connector (E37-1611-05) that
is connected between the
CN32 and the AC/DC power
supply 4-pin connectors, and
attach jig cable (W05-1772-
00).
Connect the jig cable to an
ammeter. (Refer to page 161.)
After the adjustment, discon-
nect jig cable and reconnect
the lead wire with connector
(E37-1611-05) to its original
position.
Note:
• Continuously adjust VR3
and VR4. Do not return to
the reception condition after
adjusting VR3.
• Prior to connecting a jig cable
to an ammeter, turn the main
power OFF with the main
power switch (I/O) on the rear
panel.
6. FAN Check 1) Main display f.:
14.100000MHz
Mode: CW
AT: ON
Short TP5 and GND.
2) Main display f.:
14.100000MHz
Mode: CW
AT: ON
Short TP6 and GND.
7. Vd meter 1) Menu No.: 110 (14.1MHz,
USB)
Transmit
8. ID current 1) Menu No.: 104 (29.1MHz,
setting CW)
Transmit
Note: Record the current
adjustment value.
196
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Ammeter Final CN32 Final
(A/2) (A/2)
AC/DC 4-pin
power connec-
supply tor
Final TP5
(A/2)
TP6
Power Rear ANT1 Front
meter panel panel
500W ATT
Front
panel
Adjustment
Parts Method
Check the default
current (I ).
1
I = 16mA (approxi-
1
mately)
VR3 I + 250mA = I ±50mA
1 2
VR4 I + 250mA = I ±50mA
2 3
Check Two Final FAN rotate strongly.
The AT FAN operates during
AT ON.
There are no abnormal
noises.
[UP]/ 1 push
[UP-
DATE]
(F5)
[UP]/ Set the adjustment This adjustment is performed
[+](F5) value to 35. for "9. Power Check".
or
[DOWN]
/[-](F4)
Specifi cations/Remarks