Receiving (Base Station) - Sanyo CLA-1380 Service Manual

3. RECEIVING (BASE STATION)
Test
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Equipment
FM SSG (50 ohm, OPEN type)
AF VTVM
Distortion meter
Dummy Load (600 ohm)
AC Adaptor (DC 9.OV --- center minus)
Loop Simulator
Power Supply (DC 48V)
I
(!
I
1-
1. RXIF
(1) Connect a FM SSG (1 kHz mod., 1.5 kHz dev.,
39.800 MHz,, 46dBp) to the CN101.
(2) Connect an AF-VTVM and distortion meter in parallel
and terminate a 600
ohm
dummy load across the
TEL line.
(3) Adjust T301 so that the reading of the AF volhmeter
is maximum level and minimum distortion at distor-
tion rmeter.
Unit Condition
(1)
(2)
(3)
Set a S403 "RINGER" to LO / HI position.
Set a S404 "ANS.ONLY" to ANS. ONLY position.
Setting band :6 channel (39.800 MHz)
Select channel 6 by "FFWD" button pushed six
times at speedy. Confirm at Frequency Counter only
when changed a S403 "PULSE I TONE" to PULSE
position .
Push "PLAY" button.
2. RX RF
(1) Connect a FM SSG (46dB,~ 4 10clB~) to the
CN101.
(2) Adjust
T101 so that the reacting of the distortion me-
ter is minimum distortion (less than 100/~).
3. RX AF LEVEL
(1) Connect a
FM SSG (l OCIBP -+
46dB~) to the
CNIO1.
(2)
Adjust VR301 so that the reading of the AC volt-
meter is -10 dBm t 1 dB at TEL line.
STEP CONDITION ADJUST ADJUST VALUE
SPECIFICATION
1. RXIF
FM SSG : 46dBP T301 Maximum Level at
-.--.-
Minimum Distortion
2. RX RF FM SSG : 10dBJ, T101 Minimum Distortion less than 107.
3. RX AF LEVEL FM SSG : 46dB/ VR301 -10 dBm -10 dBm f 1
dB (1
kHz)
-7.5 dBm f3 dB (300 Hz)
-19 dBm ~3 dB (3 kHz)
CN101
Unit
L1OI(H)
FM SSG
(DPX side)
TEL LINE
LOOP
AF
SIMULATOR
~ GND(E)
VTVM
TEST
Dummy
Mod. :1 kHz GND
600 ohm
D12v. :1.5
kHz
POWER
SUPPLY
Distortion
Meter
Op
DC 48V
(OPTIONAL)
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