PARSEC Supergun v2.0 Instructions
Thank you for purchasing the Parsec Supergun.  It has been designed to offer high compatibility as well as good picture and sound quality.  The Parsec is safe to use with vintage arcade circuit boards, RGB video converters such as the XRGB mini and OSSC, and TVs / monitors.
POWER
The Parsec is merely a pass through connector for powering your arcade game PCB.  It is important to use a good quality power supply with ATX compatible 20 or 24 pin connector.  Arcade power supplies can also be used with a correctly wired ATX harness.  Most JAMMA arcade games use 3 - 10 amps at +5v. 
The yellow "STANDBY" led indicates the connected ATX compatible power supply is switched on and the arcade game may be powered up with the onboard power switch (ATX computer supply only.)  When using an arcade power supply, its AC input would need to be switched.
It is strongly recommended to use a multimeter and take voltage measurements of the incoming +5v and +12v before and after connecting your JAMMA arcade game PCB.  There are labeled pins on the Parsec (near the ATX connector) for easy voltage measurement.  Measurement range listed below:
+5v measurement  =  5.0v - 5.15v
+12v measurement = 12.0v - 12.4v
CAUTION:  If voltages are higher than listed, damage could occur to a connected arcade game PCB.  If the +5v input is higher than 5.5v, the Parsec could be damaged.  Immediately power down the system and locate the cause if the voltages are higher or lower than above specification.
The on-board -5v regulator is powered from the +12v supply and turned on/off by the large slide switch near the ATX connector.  This switch should be turned "ON" when no -5v is present at the ATX connector and the arcade game requires -5v.  Turning this switch to the "OFF" position connects the ATX -5v pin to the JAMMA power pin.  On board LEDs indicate voltage present:  Red = +5v,  Green = -5v,  Blue = +12v
VIDEO
Parsec has 3 built-in video output options with 75 ohm drivers:  RGB, s-video, and composite video.
CSYNC output is SCART level;  jumper "J2" can be bridged if TTL level sync is required.  Do not jumper "J2" unless certain the monitor supports TTL level sync.
3 potentiometers are used for level adjustment of red, green, and blue video signals.  Turning these clockwise increases the brightness.  When playing a new game, It is best to start with the potentiometers in the fully counter-clockwise position and increase brightness if necessary.  It is normal for RGB video to be brighter than composite / s-video.
Parsec is compatible with 8 pin mini-DIN cables utilizing the XRGB mini Framemeister pinout.  A correctly wired RGB SCART cable will have directly connected red, green, blue, and sync wires (no inline components.)

Optional A/V Expansion HAT
The optional video HAT PCB has a supplementary VGA style connector for RGB video output, space to mount a Viletim component video add-on PCB for 240p YPbPr video output, and 1/8" stereo auxiliary audio in/out jack.
12 pin and 4 pin video header receptacles connect to pins on the HAT board which is mounted to the front of the main PCB with screws and spacers.
The 1/8" "AUX AUDIO" jack functions as an input to the 8p mini-DIN connector only when a plug is inserted into the "AUDIO LINE OUT" connector on the main Parsec PCB (for JAMMA audio.)  When nothing is connected to "AUDIO LINE OUT," the HAT board's auxiliary audio jack works as an additional line-level audio output.  This connector is Digikey part # CP1-3555NG-ND  (not installed unless requested at time of purchase.)
A switch allows 2 different sync output options to the VGA connector:  Composite sync (C) or separate TTL level horizontal and vertical sync (HV.)
The Viletim component video add-on PCB connects to the HAT with 5 soldered header pins, and also requires 2 jumper wires from the Pb and Pr outputs to the red and blue RCA connectors.  This add-on PCB is available from the etim online shop:  etim.net.au/shop
AUDIO
An on-board switch selects JAMMA mono or stereo sound (stereo sound is only supported on compatible Neo Geo boards.)  Audio output is provided through either a 1/8" stereo line out jack or the 8 pin A/V out connector.  The 8p A/V out audio is disabled when a cord is plugged into the "AUDIO LINE OUT"  jack.
Note: The "AUDIO LINE OUT" connector is not designed for headphones.
Leave the "STEREO/MONO" switch in "MONO" position unless using a compatible Neo Geo MVS or other PCB supporting JAMMA stereo.
Parsec has an isolated audio ground feature to eliminate interference from the main system ground.  The "AUDIO GND" switch is located between the composite video connector and audio output jack.  This switch must be in the "GND" position to use the 8p A/V connector for sound.  To use isolated grounding, plug an audio cable into the 1/8" "AUDIO LINE OUT" connector and move the "AUDIO GND" switch to the "ISO" position.
CONTROLS / KICK HARNESS
Parsec has two Neo Geo compatible controller ports for players 1 & 2.  In order to use Parsec with 6 button games, a correctly wired kick harness and compatible controller are required.  Refer to the partial wiring diagram on page 4.
A connector is included that can be soldered to a specific game's kick harness.  If additional connectors are needed, they are 0.1" (2.54mm) pitch molex 6 pin, Digikey part # WM3237-ND.   Standard Neo Geo controllers can only access buttons 1-4; if using the alternate mapping they can utilize buttons 1-5.
The "insert coin" and button 5 inputs can be swapped by using the "J1" jumper pins (figure 1.) Standard mapping has the insert coin input assigned to the select button on a standard Neo Geo controller.  Installing the jumpers in the alternate position will swap the button 5 and "insert coin" inputs for each player.

The six DIP switches connect / disconnect button inputs 4 - 6 from the JAMMA connector.  These switches can be left off for most games.  For Neo Geo MVS, switch 4 and 5 on.  Unless playing one of the newer arcade game PCBs supporting 6 button JAMMA, the switches for button 6 should always be left off.
JAMMA ARCADE GAME CONNECTION
CAUTION:  Check all connections and switch positions before powering on the PARSEC.
The actual JAMMA arcade game PCB should be connected last.  If the height of the two JAMMA connectors is off, use a spacer (such as a dvd case) to raise up the Parsec PCB to the same height as the arcade game.  When plugging in your JAMMA arcade PCB, use care to make sure the pins are properly aligned and fully inserted straight into the connector.  When unplugging the arcade PCB, use your thumbs on both sides of the connector and apply equal pressure to remove the Parsec straight out.

COMPATIBILITY
Parsec is designed for maximum compatibility with the majority of JAMMA arcade games and RGB displays / converters.  However, there may be some games and RGB displays that are not compatible.