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4. Switch and Control Setting during Adjustment and
Checking
The following setting is to be perform with the SET
switch (S203), "+" switch (S201) and "_" switch (S202).
Transmitting Channel setting:
U14 model;
16-01 channel (482.125 MHz)
U30 model;
32-01 channel (578.125 MHz)
U62 model;
64-01 channel (770.125 MHz)
U66 model;
68-01 channel (794.125 MHz)
CE21 model; 22-32 channel (482.000 MHz)
CE33 model; 34-32 channel (578.000 MHz)
CE62 model; 63-32 channel (810.000 MHz)
CE67 model; 68-32 channel (850.000 MHz)
AU66 model; 67-01 channel (799.250 MHz)
Attenuation setting:
Accumulated time setting: "00:00"
Adjustment Location
GND
S201 (+)
CT201
RV304
1
RV301
1
1
RV303
S301
(POWER)
VCC
CN402
MB-914 board (B side)
WRT-847A/847B
0 dB
S202 (–)
S203 (SET)
1
ON
DP-341 board
RF-96 board
RV402
1
1
RV401
1
CT401
MB-914 board (A side)
3-2-1. Power Supply Voltage Check
Equipment and Tools Required
DC power supply
DC output voltage: +3.0 ± 0.1 V dc
DC ammeter
DC volt meter (or Digital multimeter)
Adjuster (Parts No. 7-721-052-81)
Switch and Control Setting
Perform the same setting as described in "4. Switch and Con-
trol Setting during Adjustment and Checking," on page 3-3.
Procedure
(1) Set the POWER switch (S301) on the MB-914 board to
ON.
(2) Check the DC Voltage of the CL307 check land to the
specified voltage as below:
Specification: DC Voltage at CL307
= +5.8 ± 0.1 V dc
(3) Check the DC Voltage of the CL308 check land the
specified voltage as below:
Specification: DC Voltage at CL308
= +3.3 ± 0.1 V dc
3-3
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