Standard Communications TVM Series Owner's Manual page 45

Option Installation
3. Install the new PK00 board in its spot inside the front panel.
The remaining board and the board removed earlier are both named PK00.
The new one is a double-decked chassis board, and is the only one that will
fit into the space provided.
4. Install the front panel plate to cover the PK00 board.
5. Reattach all cables removed in step 2 under CSG60 Installation.
Cable Modification
This section is for units with SN 03Uxxxxxx or earlier.
1. On the P500 board, the W501 cable is too short to reach the PK00 board
and JK02. This cable must be lengthened by five inches, using the same
color and gauge wire. After lengthening it, use shrink wrap tubing to cover
the exposed areas of the wire.
2. On the rear plate terminal block, the GND and CONT cables need to be
lengthened by three inches. Use the same gauge and color wire, and use
shrink wrap tubing to cover the exposed splice areas. Then, plug this as-
sembly into the PK00 board at JK03.
Connector Modification
On the CMA60, unsolder the longest coaxial cable from its connector and resol-
der it to the VIDEO OUT connector on the CSG60. Electrically, the VIDEO IN and
VIDEO OUT jacks will be parallel. A wire connecting the center pins of the two
jacks should now be seen. If there is no grounding tab on the VIDEO OUT con-
nector, solder the wire directly to the VIDEO IN connector.
Interconnections
Refer to Table 5-1 when making connections between PC boards.
Performance of the unit depends on it. See Figure 5-8. When tie-wrapping the
cables, leave some slack to those cables that have RF connectors—they can
easily be pulled out of their sockets.
CSG60 Installation Notes
1. The 4.5 MHz connector on the rear panel plate is used only under certain
conditions and is not operative.
2. When tie-wrapping, it is important to keep the wires and cables that go from
the microprocessor board to the RF block SEPARATED from the CSG60
cables.
Page 5-8
NOTE
Owner's Manual TVM450/S/TVM550/S/TVM550II/TVM550IIS