Control panel tests

If the Control Panel serial cable is not connected to the Pogle Workstation, or Andix or Platinum is not running, the panels will automatically start up in test mode and will stay that way until the workstation is running.

The feedback for the various panel tests is seen on the Transport Control Panel Blue Display. The first test seen will be Key Test. There are several tests available as detailed below:

The different tests are accessed by using the Framing Up/Down buttons on the Transport Control Panel and the required test is selected by using the Stop Key. Some tests require switching things on and off. Use the Enter key to do this.

If the panel software is loaded from the workstation, then test mode is slightly different.

Version Test feeds back the version of the software file downloaded from the workstation.
After the GPI test, there are two more tests:

In this test mode, the different tests are accessed by using the UP and DOWN buttons on the Transport Control Panel, and are selected by using the Perform Key.

When you have finished with test mode, press the "CLEAR" and "-" keys again. This will switch the panels back to normal operation.

More Detail

Key Test
As each key is pressed, the Blue Display will tell you that the system has seen the contact closure of that key. If a single key is not being seen, it is likely that the switch is damaged. If, however, a number of switches on a panel is not being seen, then suspect matrix drivers or cable faults.

Encoder Test
If a single encoder (knob) is not changing the numbers on the Blue Display it is most likely that the encoder is dead. It is possible, in some positions, to swop the plugs between separate encoders to confirm the circuitry is working. With trackballs there is one encoder on the Master ring (if fitted) and two encoders on the Ball itself. If all the encoders on a particular trackball are dead suspect cabling type faults. If a single encoder is dead check that there is nothing stopping free movement of the encoder and that the foam ring on the end of the encoder shaft is not damaged. The Gamma and Gain trackballs can be temporarily swopped to confirm the function of the circuitry.

Lamp Test
Either Bulbs or Drivers!

Stepper Test
The stepper motor is used to simulate the friction drive of a VTR Jog Wheel. If the stepper does not rotate the shuttle wheel, check that the grub screw holding the shuttle wheel to the stepper motor shaft is not loose.

Disk Test
This is of use for Andix systems only.

Serial Test
This is used to check the RS422 communications drivers from the Control Panel Interface to the Workstation. Using an oscilloscope look at the RS422 connector from the Panel Interface.
Pin 3 should be low going high when you press the perform / enter key (see above)
Pin 8 should be high going low when you press the perform / enter key.
The RS422 line driver is U17 type MC3487 in the PBX5020 Control Panel Interface
(The RS422 line receiver is U7 type MC3486)
Please see note below regarding the RS422 Drivers and Receivers in the Workstation.

EE Ram
This is a simple Pass/Fail test. Please contact Pandora should the unit fail this test.

Touch Test
You should see X=0 and Y=0 on the display. When you press the touch screen on the DCP panel the X and Y numbers will change.
The X/Y origin for the touch screen is in the bottom right corner of the screen.
The maximum X is at the extreme left of the screen. This number is around 320H to 350H approx.
The maximum Y is along  the top of the screen and is approx. 2A0H to 2C0H.
Please see below for details of the Touch Screen Calibration process.

GPI Test
These tests will toggle the relay outputs of the GPI outputs in the Control Panel Interface.

Clear EE Ram
Clears the ESquare RAM.

General Points.
In case of intermittent failure of the panels, check the integrity of the 50 way ribbon cable that connects all the panels to the Panel Interface. The 50 way IDC sockets can easily be damaged by clumsy removal of the connector from the panel - usually noticeable by looking at the "underside" of the cable where the connector is crimped on. It is easy to pull the cable from the crimp which will cause intermittent lock-ups. Another possible cause of intermittent failure is the RS422 cable between the Panel Interface and the Workstation. Make sure this is a screened cable with the screen attached to pins 4 and 6 of the 9 way D type connectors at both ends of the cable.
It is possible to run the panel interface with just the transport panel in order to find out if one individual panel is causing the whole system to lock up. If the power is removed from a panel and the 50 way cable is still attached, this will cause the the whole unit to lock up. If a single panel is causing a lock-up, then it is quite possible that the Xilinx (PLCC) chip has failed. This is part type XC7272 and may have a sticker on it saying PT5000. The same chip is used in all the control panels so it is possible to swop these parts to assist fault-finding. Please Note, if you intend to remove a PLCC device, you MUST use the CORRECT TOOL or the socket can be destroyed.

Earthing / Ground connections.
If the panels are to be mounted in a wooden "Picture Frame" or some form of custom surround, you MUST ensure that all the panels are connected to ground ( This also applies to the Plastic Console where ground cables are fitted as standard ) There is a threaded stud fitted to the PBX5020 Panel Interface for this ground connection, and each control panel has a 1/4in spade connector fitted.  If the panels are not earthed it is highly likely that static discharges will destroy the PT5000 chip. It follows from this that the mains earth connection to the Panel Interface must be connected to protective earth.

Pogle Workstation RS422 Drivers and Receivers.
We have mentioned the RS422 Drivers and Receivers in the Panel Interface. These chips are matched at the other end of the cable in the Workstation. The relevant positions and types are:
Receive position U130 type MC3486
Transmit position U125 type MC3487

Touch Screen Calibration.
Although the Touch Screen may be working, as seen by the Control Panel tests, the calibration (alignment) may still be incorrect. This would be noticeable by intermittent or non-operation of the touch screen. The procedure for calibration is as follows:
1. Locate the 3 buttons above the pointer ball on the qwerty control panel. Press buttons 1 & 3 TOGETHER. You should now have a hand pointer on the DCP control panel screen controlled by the trackball on the qwerty panel.
2. Click on the Toolí icon at the top of the DCP display. This is no.1 of 6 icons. (Use button no. 3 above the ëqwertyí trackball.)
3. You should now see a new row of 7 icons. Select icon no. 3 with the hand.
4. A box appears on the DCP display with Do It in the centre. Click on the Do It.
5. A finger icon along with a Cancel icon should appear in the top left of the DCP display. Press the finger icon with YOUR OWN FINGER.
6. Next a finger and Cancel icon appears in the bottom right of the DCP display.
Select the finger icon again with your own finger. The DCP display should now be calibrated and the pointer returned to the Platinum or Andix display.

Hardware.
PBX5020 Control Panel Interface.
It is possible to check that the panel interface is working correctly in order to aid faultfinding. There are two ways to do this:
1 Connect a terminal to the debug port or
2 Remove the screws holding the interface down and look at the board.
Please note, there are LIVE MAINS CONNECTORS in the panel interface. Please be careful.

Method 1. The following is a screen dump from a working panel interface:

*
MC68681...
Keys...
EERAM~
MC68901...WD33C93...............................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
.....................
SCSI...
Pogle Control EPROM V20 running....
Starting Initialisation:
MC68681 Serial...
Keys...
Sounds...
Screen Saver...
Boot Screen...
Clearing EL Memory...
Screens Loaded...
EL Display On...
Cash display...
Disk Cache...
Stepper Motor...
Remote Control...
Test Routines...
Interrupts On...
Lamps On...
Initialisation Complete

This is from a system without a floppy drive attached. You will see the line:

TEAC    FC-1     HF   11RV JA

immediately before SCSI... if the system has a floppy drive attached.
This will confirm that the panel interface is booting correctly.

Method 2.
Remove the mains power connector and the RS422 cable from the workstation. Remove the screws holding down the panel interface and look inside the box. When you re-apply the power, you should see LED 1 and 2 light up. This confirms that the LCA chips have been correctly configured. After a short time, you will see a LED marked KEY start to flash on and off very rapidly. This confirms that the interface is scanning across the switches looking for key presses. If the RS422 is now attached then the KEY LED will slow down while software is being downloaded from the workstation (this will happen even if the panels are disconnected). You will see one flash of this LED for every star that appears on the blue display and in the Pogle Platinum debug window.

Platinum.
The panels are the same for an Andix or Platinum Pogle. There is a slight difference in the cable to the workstation however. With Platinum, there will be a "splitter" type cable between the panels and the workstation. This is simply taking two of the RS422 phases and sending them to the SGI in order to drive the pointer on the SGI screen. When using an Indy, the cable will plug directly into the back of the SGI. With an O2, the signal must be converted to RS 232 levels. There will be a 9pin to 25pin 422 to 232 adaptor, then a PC to AT adaptor cable to come back to a 9pin dee. This dee is pluged into port 2 on the back of the O2.