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6. BOARD INTERCHANGEABILITY
6.1 DISPLAY UNIT
All boards except the AMP board 01P5725 in the display unit are common PC board for all
frequency units.
The AMP board 01P5725 is fitted with a crystal oscillator for the designated signal
transmission frequency (33, 40 or 50kHz) only.
The frequency can be changed by adding a crystal oscillator and changing jumper settings.
Necessary parts
Frequency
33kHz
40kHz
50kHz
Procedures
1. #7 and #8 pin holes for crystal oscillator on the board are shorted by a jumper wire
when crystal oscillators are not installed. Remove the jumper to install the crystal
oscillator for the desired frequency.
2. Change the settings of jumper block Jxx1 and jumper wire as follows.
Frequency
33 kHz
40 kHz
50 kHz
Note: All jumper wires (FL-F4, FM-F2, FH-F6) are set previously in the factory
Type of Crystal
NTO-762BA 4885kHz
NTO-762BA 4955kHz
NTO-762BA 5055kHz
Jumper Block Jxx1
FL
FM
FH
Fig.6.1 Jumper settings
Code No.
000-11 8-959
000-118-960
000-118-961
Jumper Wire
FL-F4
FM-F2
FH-F6
6-1
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