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Figure 4a: A 796014 card that replaces the stock 791575-X board (front view).
Figure 4b: Rear view of a 796014 card.
For receivers already having an MFP front panel (WJ-8718A/MFP, etc.):
a.
Locate the MFP-A4 Synthesizer Interface/Memory card (794275-X) on
the A6 I/O mainboard, sockets XA1 (X7 and X8); unplug and remove it,
replacing with the new one that is also provided with U17 IC and two
proper EPROMS (U1 and U2) containing the software for the 1-Hz Option
too (see Figures 5 and 6 for some more card details).
b.
Place the new MFP front panel (with an 8-digit frequency display) in the front
of the receiver, taking care not to damage the power switch shaft.
c.
Reconnect to the proper front panel sockets all the cable assemblies that had
been disconnected, using a reverse process: MFP-P12 to MFP-P14, MFP-P13
to MFP-P15, MFP-P1 (16-pin) to J2, MFP-P2 (14-pin) to J1. Reconnect also
the Line Audio cable coming from the A4 IF motherboard to the Line Audio
potentiometer on the front panel. Re-insert the Front Panel Encoder card A1-
796056-X into the Front Panel Interconnect small motherboard (MFP-A1,
794310-X).
8
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