Page 63 of 68
Test the Tone Volume PCB Step 1
Here is the input selector test procedure:
1.
Connect the IEC power cord to the PR101 and the AC mains (wall socket).
2.
Switch on the AC power.
3.
Measure the DC voltages on TB5 of the Tone Volume board.
a.
It should be +12V plus or minus 0.5 V between the POS12V and GND
terminals
b.
It should be -12V plus or minus 0.5 V between the NEG12V and GND
terminals
4.
Remove the IEC power cord.
Warning: do not go any further until this test is passed. If you’re having trouble, please
send email to
for troubleshooting advice.
Test the Tone Volume PCB Step 2
Figure 43-Showing 10 pin Ribbon Cable Installation and Orientation
1.
Locate the 10 pin ribbon cable.
2.
Refer to Figure 43 for the cable orientation. Note that the red stripe on the cable
faces up when connecting to the controller.
3.
Touch the chassis first. You may get a static electricity shock, but better you than
the controller (it has protection, but let’s avoid exercising it).
4.
Install the 10 pin ribbon cable:
a.
Attach one end to the tone/volume PCB. Look for the keying features of
both connectors to get the orientation correct.
b.
Attach the other end to the 10 pin connector on the controller PCB. Look
for the keying features of both connectors to get the orientation correct.
5.
Re-install the IEC power cord and turn the power on.
6.
Wait a few seconds after power up.
7.
Push the TC button on the front panel. Each push should produce a soft but
audible mechanical thump from the tone control relay on the Tone Volume PCB.
8.
Point the remote control at the PR101. Press the volume up/down buttons. You
should see and hear the volume control move.
9.
Point the remote control at the PR101. Press the balance left and right buttons.
You should see the balance control move.
Remove the IEC power cable from the AC mains and the IEC connector of the PR-101
