S0-1 Installation - Kenwood TS-940S Instruction Manual

9-5. VS-1 INSTALLATION
Note:---------------------------------------
Two 3-pin jacks are on the VS-1 pc board. The outer jack
is J01. Use this jack when connecting.
When the VS-1 unit is installed, the displayed frequency is
announced by synthesized voice.
To install, proceed as follows:
(1) Remove the top cover with a No. 2 Philips screw-
driver.
(2) Place the VS-1 unit on the space shown in the figure
and secure it with 4 screws supplied.
(3) Connect 3-pin (A) and 8-pin (B) plugs equipped with
the TS-9405 as shown to J01 (3-pin jack) and J02
(8-pin jack).
9-6. S0-1 INSTALLATION
1. Disconnect Power before Proceeding!
2. Using a No. 2 Philips screwdriver, remove the trans-
ceiver top cover (8 screws).
3. Remove four screws from the Digital unit shield. Be
careful of the wiring and protect the top edge of the
front panel and the S-Meter terminals, when lifting the
shield and digital unit forward. Reset the assembly on
the top of the front panel with a cardboard or similar
protective buffer so the panel is not marked or
scratched.
4. Remove 8 screws securing the PLL unit.
5. Using a 45W (or less) soldering iron, remove those
components from the PLL PCB from the space into
which the S0-1 unit will be mounted.
REMOVE: TC1, X1, 01, C2
~
6, R1
~
4.
6. Before mounting the S0-1, clear the solder from the
four mounting holes. Install the S0-1 unit as shown
and solder its four posts to the PC board. Solder spar-
ingly, and heat the connections only long enough to
insure a good solder joint. Don't overheat the S0-1 or
circuit board. Clip the S0-1 leads flush to the circuit
board.
7. Before reassembly, verify digital display calibration.
Note, however, that the adjustment is no longer avai-
44
VS-1 Installation
lable from the side of the transceiver, but is on top of
the S0-1.
8. Remount the PLL unit and digital unit shield with top
panel assembly. Note: During this procedure, be sure
not to pinch any wires between the chassis and the
PLL PCB or the digital unit shield and chassis. Watch
the shield to S-Meter clearance during reassembly.