Display Check; Pll Section - Kenwood TS-990S Service Manual

Display Check

Item Condition
1. Setting and 1) Setting
full reset (1) Plug the AC power cable
into an AC outlet.
(2) Press the main I/O power
switch located on the rear
panel, to the "I" (ON) to
source the power to the
transceiver.
2) Full reset
(1) Press the [MENU] key.
(2) Press the [RESET] (F) key.
The reset selection screen
appears.
(3) Press the [▲] (F2)/[▼] (F3)
keys or rotate the [MULTI/
CH] control, then select "Full
Reset".
(4) Press the [SELECT] (F4)
key.
A message prompting you to
start the Full Reset appears.
(5) Press the [RESET] (F4) key.
The transceiver is reset and
automatically restarts.
2. LCD and 1) Menu No.: 129
LED Check

PLL Section

Item Condition
1. MAIN REF 1) Main display f.:
lock voltage 14.100000MHz
Mode: USB
2. MAIN VCO1 1) Main display f.: 0.030000MHz
lock voltage Mode: USB
2) Main display f.: 0.999990MHz
3. MAIN VCO2 1) Main display f.: 1.400000MHz
lock voltage Mode: USB
2) Main display f.: 2.499990MHz
ADJUSTMENT
Measurement
Test-
Unit Terminal
equipment
Front
panel
Measurement
Test-
Unit Terminal Unit
equipment
DVM PLL MD_CV PLL
(MAIN) (MAIN)
M_CV
PLL
(MAIN)
Adjustment
Unit Parts Method
Main After displaying the
dis- startup screen, the
play display is reset as
follows;
Main band:
14.000.000 (USB)
Sub band:
14.000.000 (USB)
ANT: 1
ATT: OFF
P.SEL: OFF
P.AMP: ON
MAX-Po: 200W
MATER: Po
TX-FIL: FIL-A
Check
Adjustment
Parts Method
TC1 3.0V
TC3 1.3V
Check
TC2 1.3V
Check
TS-990S
Specifi cations/Remarks
Display should be normal.
Should be at the reset fre-
quency.
The main and sub display
become white.
All LEDs (54) light.
Specifi cations/Remarks
±0.1V
±0.05V
11.2V or less
±0.05V
11.2V or less
165