Figure - Siemens SC 7000 Service Manual

SC 7000 and SC 9000XL Patient Monitors
3.2 Using main battery as
power source, monitor
either doesn't
maintain monitor
operations for
prescribed time, or
won't power ON.
ASK-T898-03-7600
7k9kXLSM.c5.CD_ROM.fm/04-99/kaupp
5) Open monitor and remove Main Processor PCB Subassembly from
rear housing to access Connector I/O PCB.
6) Check continuity of F1. See
Note: It is not necessary to remove Connector I/O PCB from rear
housing or lift one side of fuse. With power sources unplugged from
monitor and nothing plugged into X1, continuity of F1 can be checked
from solder points on interior side of board.
Removing the Connector I/O PCB requires that the slide lock on the
etCO2 connector on back of the monitor be removed to release the
board. This damages the label above the connector. The damaged
label must be removed and a replacement label (supplied with
replacement fuses) installed.
7) Does F1 measure as open? (>5Ω)
Yes: Remove Connector I/O PCB, replace F1, reassemble
monitor, and perform monitor power-on check. If F1 opens a
second time, replace F1 and Main Processor PCB
Subassembly.
No: Replace Main Processor PCB Subassembly.
1) Does unit power ON while connected to an external power source?
Yes: Continue
No: Go to Section
2) Remove all external power sources (including external battery if
installed), remove back cover, and unplug battery cable from main
battery.
3) Is voltage = 11.6 to 13.8 VDC present at battery terminals?
Yes: Continue to step 4.
No: Battery is not charged to 12VDC. Reconnect battery cable
to battery terminals, and go to
4) Check in-line fuse in power harness (if installed), and check for <5Ω
between black wire battery terminal connector and pin 4 on connector
X1. See Figure 5-1 on page
5) Is harness fuse OK, and resistance between black wire terminal
connector and pin 4 on connector X1 <5Ω?
Yes: Open monitor and remove Main Processor PCB
Subassembly from rear housing to access Connector I/O
PCB. Then continue to step 6.
No: Either fuse in battery power harness is open or there is
discontinuity between black wire terminal connector and pin
4 on X1. Replace harness, and perform monitor power-on
check. If fuse opens a second time, replace harness and
Main Processor PCB Subassembly.
6) Check continuity of F3. See
Note: It is not necessary to remove Connector I/O PCB from rear
housing or lift one side of fuse. With power sources unplugged from
monitor and nothing plugged into X1, continuity of F3 can be checked
from solder points on interior side of board.
Siemens Medical Systems, EM-PCS Danvers
NOT A CONTROLLED DOCUMENT
Figure 5-1 on page 76.
3.4, Troubleshooting ON/OFF control.
Section 3.5.
76.
Figure 5-1 on page 76.
Service Manual
77