For Handset - Sanyo CLT-186X Service Manual

ADJUSTMENT
" Accessing of Test mode can beeither bysoldershortlCOOl
pin2 to Grid. or depressing key number "l" and "9"
simultaneously, during intil DC power supply to the unit.
2. ALIGNMENT FOR HANDSET SECTION
2-1. Tx/Rx VCO
Test Equipment
Digital Voltmeter
DC Power Supply (DC 3.8V)
Adjustment
Unit
Tx
IC351 6 pin Tx VCO
T
4 pin Rx VCO ~
Digital
Voltmeter
GND Rx _
I
STEP
I
CONDITION
\ ADJUST I ADJUSTED VALUE
I
SPECIFICATION
I
1. Tx VCO
Tx VCO side
T253
1.5V 1.5 V*0.1 v
2. Rx VCO
Rx VCO side
T153
1.5V
1.5 V*0.I v
Unit Condition
a) Set unit to "TEST" mode .
b) Setup the unit as shown below.
c) Depress "O" followed by "#' to obtain channel 10 transmission
frequency of 40.000MHz.
d) AlignT253(Tx)&T153 (Rx) to obtain 1.5 V t 0.1 VDC reading
from digital voltmeter respectively.
2-2. TRANSMllllNG
Test Equipment
RF Electronic Voltmeter
Linear Detector
Dummy load (50 Q)
Frequency Counter
AF Oscillator
DC Power Supply (DC3.8V)
Unit Condition
(a) Set the unit under test into test mode.
(b) Connect the circuit as shown below.
c) Tx FREQUENCY
Change the frequency 39.925MHz, by depressing "7"followed
by "*" of the dialing pad modulation at the Frequency counter.
Align CT151 to obtain 39.925 MHz * 0.3 kHz from freq.
d)
e)
f)
counter.
Tx Power
Connect the RF Electronics Voltmeter to the unit and align
T251 and T252 to the maximum power obtainable.
>7.0 dBm +5.0 dBm-OdBm.
Tx MODULATION
Connect the Linear detector to the unit.
Inject AF oscillator (1 kHz, 10mV) to microphone input.
Align VR651 to obtain 2.0 kHz ~ 0.1 kHz dev. from Linear
detector.
(n/F Mode)
Confirm Hands free Tx Mod as following.
Hands free Mode is ON by pushing "SPEAKER" key and
"CHANNE~ key. Then Hands free (H/F) Speaker Mute is ON.
Confirm 2.6 + 0.5 kHz dev.
TX DATA Mod
After e) Push "Talk key. Check the read of linear detector is
4.0 kHz t 1.0 kHz dev.
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