Panasonic KX-TC1468LBB, Service Manual

Page: 22 / 64

8.2. Adjustment
Adjustment Items Test Mode Adjustment
Point
*Procedure Check or
Replace
Parts
( A ) RX VCO CH1 Talk L502
· Adjust L502 so that the reading of the Digital Voltmeter is 1.75V ± 0.2V.
(at TP808)
IC1, L502,
VD501
( B ) TX VCO CH1 Talk L503 · Adjust L503 so that the reading of the Digital Voltmeter is 1.8V ± 0.15V.
(at TP809)
IC1,
VD502,
L503
( C ) TX Frequency CH1 Talk VC1 · Adjustment VC1 so that the reading of the frequency counter is 1ch Freq.
(902.1MHz) ± 9KHz at the antenna.
IC1
( D ) TX Power
Confirmation
CH1 Talk T5
· Confirm so that the reading of the RF VTVM is -7 ± 2dBm. (at TP510)
IC1, Q509,
Q510,
FL501,
L503
( E ) RX Sensitivity
Confirmation
CH1 Talk - 1. Apply -107dBm output from S.S.G. (modulation frequency 1KHz, dev.
0KHz).
2. Confirm that the distortion reading of Audio Analyzer is less than 25%.
FL501,
CF501,
IC1
( F ) Line Output Level
Confirmation
CH1 Talk - 1. Apply -60dBm output from S.S.G. (modulation frequency 1KHz, dev.
25KHz).
2. Confirm that the reading of Audio Analyzer is -20 ± 1dBm (600
Ω
load).
IC2
( G ) Line Input
Modulation
Confirmation
CH1 Talk - 1. Input via loop simulator 1.0KHz, -10dBm (measured at T-R) signal.
2. Confirm so that the reading of FM Deviation Meter is 25KHz ± 1KHz. IC1,
VD502
( H ) RSSI Confirmation CH1 Talk - Hold the “Locator” key for 5 seconds to enter to RSSI test.
1. Measure the SSG output level when the SIG_OUT changes from Low to
High.
2. Confirm that the SSG output level is -70+10/-15dBm.
IC1,
FL501
( I ) Data
Modulation
confirmation
TX Data -
· Confirm for 65 ± 10KHz FM Deviation Meter reading
IC3,
VD502
The connection of adjustment equipment are as shown in Adjustment Standard (Base Unit) (P.23).
SSG Frequency: 925.9 MHz
22
KX-TC1468LBB