Panasonic EB-X700 Service Manual page 62

FAULT FINDING
26MHz
>500 mVp-p
Figure 8.3: Transceiver IC (U500) and VCTCXO (Y500), clock and control signals
~ 0 dBm
1800/1900 MHz
~ +3 dBm
900 MHz
Figure 8.4: 3rd Harmonic (H3) filters (FL500 and FL501) and Limiter Amplifier (U501), transmit-path signals
Provisional Issue
Revision 1
1.2V 1.2V 1.2V 1.2V
2.7V
2.7V
~1.5V
26MHz 26MHz
>500 mVp-p ~1Vpp
2.7V
2.7V
2.7V
1800/1900 MHz: 2.7 Vp-p Square Wave
900 MHz: 0V
1800/1900 MHz: 2.7 Vp-p Square Wave
2.7V
2.7V
2.7V
2.7V
2.7V
900 MHz: 0V
Section 8
– 2 –
2.7 Vp-p
Square Wave
2.7V
2.7V
3 Vp-p
Square Wave
~ +3 dBm
1800/1900 MHz
~ +5 dBm
900 MHz
2.7 Vp-p
Square Wave
PMCE041201C8
Service Manual