Calibration/Adjustment; Main Power Supply Voltages; Voc Supply Voltage - Siemens SIRECUST 1280 Service Manual

E331 .E2501 .061.21.XX.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
7. CALIBRATION/ADJUSTMENT
This chapter details calibration pro-
cedures to be performed anytime a
printed circuit board in the display
subsection is replaced, or if the monitor
fails functional verification testing. The
procedures are used to test the display
subsection for proper operation, align the
display, and calibrate the monitor so that
it uses minimum power.
Calibration procedures require access to
potentiometers located on the printed
circuit boards within the monitor.
* Open and close the monitor only in
accordance with procedures outlined
in Chapter 4, Sections 4.1 and 4.2.
* Perform the appropriate functional
verification procedures outlined in
Chapter 5 before returning the
monitor to normal bedside service.
Boards comprising the display subsection
of the monitor are identified in Table 7-2.
Refer to Table 7-3, and Figure 7-2 or
Figure 7-3 for identification and location .
of specific potentiometers referenced in
the procedures outlined in this chapter.
7.1. Main Power Supply Voltages
NOTE: Use monitor chassis as ground. Ad-
just power supply voltages with the monitor
configured for a normal operational load, i.e.
SIREMS equipped with cartridges and all
Boards installed.
7.1.1. +5 Voc Supply Voltage
1. Connect a digital voltmeter (DVM)
to the right leg of R17 on the
Display Processor Board. Refer to
Figure 7-1.
2. Set R3 of the Power Supply Board
to +5 +0.05 Vi.
3. Secure R3 with Torque-Seal® or
an equivalent substance to
prevent any rotation and change
in the setting.
Table 7-1. Recommended Tools and Test Equipment, Calibration/Adjustment
TOOL/EQUIPMENT
Current Shunt, Mono (for 1280)
Current Shunt, Color (for 1281)
12 inch Video Alignment Grid
VME Extender Board
POLYMED/LIM Simulator
Waveform Simulator
Digital Multi-Meter (DMM), 47% digit
High Voltage Probe (for DMM), 1000:1
DESCRIPTION
SIEMENS Art. No. 96 60 606 EE999
SIEMENS Art. No. 96 60 614 EE999
SIEMENS Art. No. 84 28 450 RE999
SIEMENS Art. No. 87 91 568 E2524
SIEMENS Art. No. 45 28 345 EH436
Model Dynatech-Nevada, 215A (or
equivalent)
Fluke, Model 8050A (or equivalent)
Fluke 80K-40 (or equivalent)
Insulated Adjustment Wand, long handie w/ 1.8mm - 2.5mm wide blade
Bolt, M4 X 35
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