Specification - Sanyo CLT-538 Service Manual

I
ADJUSTMENT
CAUTION :DURING Alignment, OPEN ''AN7PA~ERN MARKED WlTH''SHOR7SlLK JUST LIKE MENTIONED
AT PAGE "PARTS LOCATION", IF RUBBER ANTIS CONNECTED.
1.ALIGNMENT FOR REMOTE UNIT
1-1. Tx/Rx VCO & Tx Freq.
Test Equipment
. Digital Voltmeter
" DC Power Supply (DC 3.8 V)
" Frequency Counter
Unit Condition
a) Disconnect Ni-Cd battery which feeds 3.8 V from power supply terminal.
b) Set unit to "TEST" mode by shorting test point TPOO1 and TPO02 together.
c) Feed 3.8V Ni-Cd battery to power supply terminal.
d) Connect frequency counter to ANT test pin. Confirm the current channel is at 10ch.
e) Connect digital voltmeter to Tx/Rx VCO terminal points.
f) Align T253 (Tx) to obtain 2.2~0.l V DC reading from digital voltmeter respectively.
[
g) AlignT153 (Rx) to obtain 1.5t0.l V DC reading from digital voltmeter respectively.
h) Tx FREQUENCY .." Confirm the Tx Freq is 40.000 MHz*l .2KHz (1 Och) from Freq. counter.
Adjustment
Unit
TX
IC351
6 PIN
Tx VCO
0?
Digital
Frequency
Ant.(H)
Counter
Ant.(E)
39 PIN Rx VCO r 'x
o
Voltmeter
TEsT(TPoo1&TPoo2) Gnd
I
I I
I
STEP
I
CONDITION I CH I
ADJUST
I
ADJUSTED VALUE
I
SPECIFICATION
[
1.Tx VCO
Tx VCO side 10 T253
2.20V
2.20V * O.lv
2. Rx VCO Rx VCO side
10
T153 1
.50V
1.50V k O.lv
3. Tx Frea.
10 -
40.000MHZ * 1.2 KHZ
-1-