Ericsson A2618s Troubleshooting Manual page 14

Trouble Shooting Guide, Standard
Measure the voltage on R801 (VDIG 2.7 ± 0.10 V
).
DC
If the VDIG voltage is incorrect, go to chapter 2 ("On/Off Problems").
If the voltage is correct, measure the resistance of R801. (3,3 kohms).
If the resistance is incorrect, replace R801.
Measure the voltage on X850: 8, 2.7 ± 0.10 V
2
. (I CCLK) Fig .5.1.
DC
If the voltage is incorrect, measure the resistance of R859 (470 ohm).
If the resistance is incorrect, replace R859.
Measure the voltage on R802 (VDIG voltage, 2.7 ± 0.10 V
).
DC
If the VDIG voltage is incorrect, go to chapter 2 ("On/Off Problems").
If the voltage is correct, measure the resistance of R802 (3.3 kohms).
If the resistance is incorrect, replace R802.
Measure the voltage on X850:10, 0.0 V . (VLCD) Fig .5.1.
DC
(The voltage is generated in the display-assembly and can not be measured)
If the fault still remains, send the unit on according to the local company directives.
Fig .5.1
4/00021-2/FEA 209 544/25 A 14(24)