ORP Board Replacement for PDAS

Prerequisites

Table 4. Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
ORP (SCORP) Board	1	-	5855016	-
Onboard Rotation Processor（ORPG2）PWA	1	-	5796592-2	-
ORPG-24 PWA	1	-	5796592-24	-
ORPG Adaptive Cable	1	-	5826006	-

Table 5. Safety

Potential for electric shock when voltages are present. Use proper Electrical Energy Lockout/Tagout procedures before replacing components.

Follow ALL required safety and PPE procedures customary for your organization, when working on this product.

Overview

This document provides the necessary steps to replace and configure the Onboard Rotation Processor Unit (ORP) for imaging.

note: If you use 5796592-2 to replace 5855016, you must order 5826006 for ORP J1 cable connection.

Move table to its lowest position.
Remove gantry right side cover.
Turn off [AXIAL DRIVE ENABLE], [HVDC ENABLE] and [120 VAC ENABLE] switches on Service Switch panel.
notice

Always turn OFF the HVDC before the 120 VAC. Turning OFF 120 VAC power before HVDC power can result in equipment damage.
Remove gantry covers as required.
Rotate gantry such that ORP assembly is in 2 o'clock position.
Engage rotational lock.
Put on the grounding wrist strap.
Detach and remove cable clamps from top of ORP Assembly with a 3mm Allen Wrench.
Cut tie-wraps holding cables to the ORP enclosure.
Disconnect four front cables and one rear cable from ORP Assembly.
Open the ORP enclosure cover by loosening its four screws.
Remove the ORP board from the enclosure by unscrewing screws and studs.

Figure 1. ORP Board Removal

Get the new ORP board and install it to the ORP enclosure by screwing its four M4 screws and one M3 screw, apply torque to:
- M3 Screw: 1.04Nm.
- M4 Screw: 2.3Nm.
Install four studs to the ORP board, apply torque to 2.3Nm. (See Figure 1)
Secure the ORP enclosure cover.
Reconnect four front cables and one rear cable to ORP Assembly.

note: If the power cable can not connect to ORP J1, please add 5826006 for cable connection, see Figure 3.
Attach cable clamps and tie-wraps to re-tie cables to ORP enclosure cover.

Figure 2. ORP Assembly without 5826006

Figure 3. ORP Assembly with 5826006
Disengage rotational lock.
Turn on 120 VAC ENABLE, AXIAL DRIVE ENABLE, and HVDC ENABLE switches on Service Switch Panel.
From Console Unix Shell prompt, type touch /usr/g/fw/orpFtp and press ENTER.
Press ESTOP RESET on Service Switch panel and wait until scan hardware is reset.

Flash Download
Gantry Rotation Safety Check
Turn off [AXIAL DRIVE ENABLE], [HVDC ENABLE] and [120 VAC ENABLE] switches on Service Switch panel.
Install gantry front, top and left side covers and scan window.
Turn on 120 VAC ENABLE, AXIAL DRIVE ENABLE, and HVDC ENABLE switches on Service Switch Panel.
Press ESTOP RESET on Service Switch panel and wait until scan hardware is reset.
Install gantry right side cover.