Lan Section (Uf-5500 Only) - Panasonic UF-5500 Service Manual

UF-5500 / 4500

11.2.19. LAN SECTION (UF-5500 only)

LAN Block Diagram
Network communication failed.
(LAN circuit failure.:In case that LAN
settings,Connection cable and peripherals
have no problems)
Confirm the MAC Address by function
parameter 110.
Is MAC Address
displayed?
YES
Is MAC Address Norma
(Is it the same as the
one on the label)
YES
While network is
connected; Is LAN
Link/Activity LED (Green)
lighted?
YES
CN750
RJ45 Connector Module
Transformer
LAN Circuit signal waveform (Normal)
Transmitter waveform [TD+ (CN750 pin1), TD- (CN750 pin2) differential voltage] : Differential probe is used.
1. When network equipment is not connected (LAN cable is not connected);
1
NO
Is the voltage of C752 and
C762 at both ends is normal
(3.3V ) ?
Replace the IC750.
NO
NO
Replace the IC750.
IC750
Physical Layer
Transceiver
X750
Crystal
LED
(25MHz)
190
NO
YES
1
1
IC300 Soc
Ethernet
MAC
(Media
Access
Control)
Replace the Main Board.