Kenwood TS-990S Service Manual page 183

Item Condition
23. SUB RX NB 1) Menu No.: 65 (14.2MHz, CW)
voltage SUB P.AMP: ON
SUB NB1: ON
AGC: FAST
SSG f.: 14.200MHz
SSG output: –103dBm
(1.58µV)
24. OPTICAL 1) Menu No.: 112 (14.1MHz,
I/O Check USB)
Mode: USB
Connect between the OPTI-
CAL IN terminal and OPTI-
CAL OUT terminal using the
cable.
25. EXT REF 1) Menu No.: 1 (14.2MHz, USB)
I/O SSG f.: 10MHz
Check SSG output: 0dBm (224mV)
Connect the cables to the
REF I/O (10MHz) terminal
from the SSG.
After the check, disconnect
the cable from the REF I/O
(10MHz) terminal.
26. MAIN 1) Menu No.: 9 (14.2MHz, USB)
RX AGC P.AMP: ON
start level FIL/SEL(M): 2.7kHz
(2.7kHz) AGC: OFF
SSG f.: 14.201MHz
SSG output: –110dBm
(0.707µV)
27. MAIN RX 1) Menu No.: 10 (14.2MHz,
AGC start USB)
level (500Hz) P.AMP: ON
FIL/SEL(M): 500Hz
AGC: OFF
SSG f.: 14.201MHz
SSG output: –110dBm
(0.707µV)
28. MAIN RX 1) Menu No.: 11 (14.2MHz,
AGC start USB)
level (270Hz) P.AMP: ON
FIL/SEL(M): 270Hz
AGC: OFF
SSG f.: 14.201MHz
SSG output: –110dBm
(0.707µV)
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
DVM TX-RX CN200 TX-RX
SSG (A/2) TP11 (B/2)
Oscillo- TX-RX (NB)
scope (B/2)
AF VM
DM.SP
Noise G.
SSG Rear REF I/O
panel (10MHz)
SSG Rear ANT 1 Front
panel panel
TS-990S
Adjustment
Parts Method
L885 Voltage min. 3.9V or less
L887 Repeat adjust for 2
L888 to 3 times.
Check that a 1kHz
sound emerges from
the internal speaker.
Check the main "ERDET: 1" appears on the
display. main display.
[UP]/[+] Using the [UP]/[+]
(F5) or (F5) or [DOWN]/[-]
[DOWN] (F4) key, adjust to
/[-](F4) the point when "A/D
data" displays "1" for
the fi rst time.
Specifi cations/Remarks
183