PMFoundations ER-808 User manual

ER-808 – Assembly Guide
_____________________________________________________________________________________
_____________________________________________________________________________________
Page 1 of 7
PM Foundations ER-808 v1.4
Main Control Module

ER-808 – Assembly Guide
_____________________________________________________________________________________
_____________________________________________________________________________________
Page 2 of 7

ER-808 – Assembly Guide
_____________________________________________________________________________________
_____________________________________________________________________________________
Page 3 of 7
Resistors
Arrange the resistors by value on the workbench in the same order as listed in the BOM and install each
numbered part for that value before moving onto the next.
Install the resistors on the TOP of the board. Take care not to mix up resistors which have similar color
codes.
Solder and clip the leads. Use a minimum amount of solder for resistors where other parts will be
soldered on top of them and cut the leads as close as possible to the PCB (R15, 16, 18, 28).
Diodes (but not LEDs)
Install the diodes on the TOP of the board. Align the stripe on each diode with the stripe marked on the
board. Solder and clip the leads. Do not mix up signal, power and zener diodes, some of them look the
same. Now go back and check the polarity against the silk screen for each diode.
IC Sockets
Install the sockets on the TOP of the board. Observe the notch or mark on the sockets and align with
the notch or mark on the board. Solder.
ICSP Header
This is only required if you intend to program or debug the PIC yourself. Install on the TOP of the board.
Ceramic and film capacitors
Install the capacitors on the TOP of the board. Solder and clip the leads. Use a minimum amount of
solder where other parts will be soldered on top of them and cut the leads as close as possible to the
PCB (C1).
Tantalum capacitors
Install on the TOP. Make sure you orient correctly. The longer lead and/or the lead marked with a +
needs to be inserted into the hole that has the “+” marking near it. Leads marked with “-“ go in the
board hole WITHOUT the “+”. Solder and clip the leads.
Use a minimum amount of solder where other parts will be soldered on top of them and cut the leads as
close as possible to the PCB (C2).
Electrolytic capacitors
Install on the TOP. Make sure you orient correctly. The longer lead and/or the lead marked with a +
needs to be inserted into the hole that has the “+” marking near it. Leads marked with “-“ go in the
board hole WITHOUT the “+”. Solder and clip the leads.

ER-808 – Assembly Guide
_____________________________________________________________________________________
_____________________________________________________________________________________
Page 4 of 7
Use a minimum amount of solder where other parts will be soldered on top of them and cut the leads as
close as possible to the PCB (C4).
LED
Insert in the TOP of the board with the LED facing out, and use the panel to align the LED. Solder the
LED and clip the leads.
Potentiometers, small switches and jack sockets
If the pots have positioning lugs on the front, cut these off with a sharp pair of flush cutting pliers.
Cut the locating leg of SW5 that will eventually be hidden under the header on the reverse before
soldering the switch.
These parts should be installed on alternate sides in the following order to simplify soldering:
VR1, SW1, J6, SW3, J5, SW4, J1, SW5.
Please ensure they are on the CORRECT SIDE OF THE BOARD before soldering otherwise PCB tracks and
pads may be damaged if they are desoldered. See Photo.
Voltage regulator LM317
Align the outline with the outline on the board. Solder and clip the leads.
Bus header
Install the 20 pin right angle bus socket on the BOTTOM of the board. This must be installed with the
correct orientation or the module will be damaged when the power is connected.
The cut-out in the socket should face the words "BUS HEADER", as shown in the photo.
The header must be completely flat and aligned with the PCB so clean up any joints that interfere with
this.

ER-808 – Assembly Guide
_____________________________________________________________________________________
_____________________________________________________________________________________
Page 5 of 7
Control header
Install the 16 pin straight control plug on the TOP of the board. This must be installed with the correct
orientation or the module will be damaged when the power is connected.
The PROTRUSION on the socket should face the edge of the board, as shown in the photo.

ER-808 – Assembly Guide
_____________________________________________________________________________________
_____________________________________________________________________________________
Page 6 of 7

ER-808 – Assembly Guide
_____________________________________________________________________________________
_____________________________________________________________________________________
Page 7 of 7
Lighted switch
Carefully insert the leads into the holes for the switch pins and LED pins. The plastic legs of the switch
must be flat onto the surface of the PCB. Any plastic legs which are fouled by other component pins
should be cut off so the switch can lie flat.
Switch caps
Push the switch caps onto the switch plungers. These are needed for testing.