How To Change The Channel; Adjustment - Panasonic KX-TC2000NZB Service Manual

KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF

11.2. How to change the channel

*: Refer to Flow Solder Side View (P.68).

11.3. Adjustment

Adjustment Items Test Mode
(A) RX VCO
Confirmation
(B) TX VCO
Adjustment
(C) TX Frequency
Adjustment
(D) TX Power
Adjustment
(E) RX Sensitivity
Confirmation
(2nd IF output)
(F) Line Output Level
Confirmation
(G) Line Input
Modulation
Confirmation
(H) Noise Squelch
Confirmation
* : The connection of adjustment equipment are as shown in Adjustment Standard (Base Unit) (P.27).
SSG Frequency: 39.875 MHz
Adjustment
Point
3ch Talk -
3ch Talk T6
3ch Talk VC1
3ch Talk T5
3ch Talk T2 1. Apply 60dBuVemf output from S.S.G. (modulation frequency 1KHz, dev.
2. Confirm that the reading of RF VTVM is the maximum value (more than
3ch Talk - 1. Apply 60dBuVemf output from S.S.G. (modulation frequency 1KHz, dev.
2. Confirm that the reading of AF VTVM is more than 120mV (600
3ch Talk - 1. Input via loop simulator 1.0KHz, -20dBm (measured at T-R) signal.
2. Apply 60dBuVemf output from S.S.G. (modulation frequency 1KHz, dev.
3. Confirm so that the reading of FM Deviation Meter is 2.8KHz ± 0.3KHz.
3ch Talk - 1. Measure the SSG output level when the noise squelch changes from Low
2. Confirm that the SSG output level is -10 ~ +5dBuVemf.
*Procedure
Confirm so that the reading of the Digital Voltmeter is 2.0V ± 1.0V.
Adjust T6 so that the reading of the Digital Voltmeter is 2.0V ± 0.3V.
Adjustment VC1 so that the reading of the frequency counter is
30.1750MHz ± 100Hz.
Adjust T5 so that the reading of the RF VTVM is more than 9dBm.
0KHz).
20mV)
3KHz).
0KHz).
to High.
26
Check or
Replace
Parts
IC1, L10,
C26, R14
IC1, DV1,
T6
IC, X1, T6,
DV1, C35,
C40, VC1
IC1, Q3,
Q4, Q5,
T5, DPX1
DPX1, T2,
CF1, CF2
IC1, Q11
load).
IC1, DV1
IC1, DPX1