Mercury Epiphone Valve Junior, Инструкция по сборке

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Epiphone Valve Jr.
•
Mercury Upgrade Kit
33
This project and its documentation is the result of technical investigations made by the engineering staff of Mercury Magnetics . The disclosure of the information herein may pertain to proprietary rights and
the furnishing of these documents does not constitute an expresed or implied license to use such materials.
FINAL WIRING (with the 6V6 option)
With the 6V6 socket in place and wired up (but not
connected to the Main PCB, let’s wrap things up:
Thread the various transformer leads through the
holes as indicated in the diagrams.
Solder the orange filament leads from the 6V6 into
positions at the V2 tube socket. Note that these
leads must be tightly twisted (see appendix).
Solder the red lead from the 6V6’s pin 4 to the
far left terminal of R12 (the side closest to the
sockets).
Solder the blue lead form the 6V6’s pin 6 to the far
left terminal of R5 (the side closest to the sockets).
Solder the yellow wire from the 6V6’s pin 3 to pin 7
of socket V2.
Solder the OT’s yellow primary lead to pin 3 of the
6V6.
Solder the two orange filament leads of the PT into
pins 2 and 7 of the 6V6 socket. Note that these
leads should be tightly twisted (see appendix).
Solder the OT’s secondary green and black leads
to the speaker jack as indicated.
Solder the OT’s primary black lead to T4 of the
Main PCB.
Solder onto T1 and T2 the red leads from the PT.
Solder the black and yellow PT leads onto the On/
Off switch.
Solder the orange/white-striped center tap lead
from the PT and the ground chassis lead to the
back of the board (see special instruction page).
Solder the Mini-Chokes leads to the locations
designed on the Main PCB.
Connect the input jack and volume control leads to
their jacks on the Main PCB.
Bolt the Main PCB back into the chassis.
Triple-check your modifications. If you have any
questions the time to get them answered is now.
Call
Mercury
if you are in doubt about anything.
Finish re-assembling the unit, including reinstalling
the tubes, putting the chassis back in the case,
hooking up the speaker, etc.
DO NOT BYPASS THIS NEXT STEP!
After triple-checking your assembly, connect the
amp’s power to a Variac , or even better, a variable
AC power supply, and follow the testing/start-up
proceedure as outlined in this manual’s appendix.
Debug if necessary and repeat this process
until you are satisfied that the Upgraded amp is
working correctly.
When the amp is working to your satisfaction use
the cable ties (supplied) to group and hold the
various wires away from the Main PCB (especially
the tubes). In particular, gather up Filament
Supply Leads tying them as close to the power
transformer as possible. See final photographs for
examples.
Apply
Loctite 290 (green) to the two retaining bolts
and screws of the Main PCB.
Apply the
Mercury metal place to properly I.D.
your Mercury Upgraded amp. And you are done!