HISTORY:
Sustainability is the name of the game! Anything (that has been tested and still functioning properly) should be repurposed creating saving in wasted Ee and reducing the poisoning our environment when items are buried in the earth at the local tip needlessly.
Never heard of Ee? It is a concept that creates a measurement of ALL things (not just electronics) that humans have made and the energy used in obtaining the raw material, processing the materials right through to a finished product and even should include the shipping of the item to the distributors/retailers.
If you would like to know more about Ee values, please take a look HERE
While the Marantz PMD340 is a good workhorse in the audio production environment, it becomes pretty useless once the CD drive fails and the laser assembly has gone A.W.O.L!
This machine was in use by us for long periods in a studio environment, never missing a beat until the laser needed replacing. Tech's took the laser electronics out to have them replaced and "poof" disappeared, somewhere. So I have this PMD340 which is absolutely fully functional but without a laser - pretty useless.
I no longer am prepared to spend time servicing our equipment (retired and TRYING to have a break from all that) and as a result, this equipment has now become an "organ donor" for other PMD340 owners.
This is the AC Power input stepdown transformer ONLY
Perhaps you need a different part for your PMD340 ... To see the other items I have from our PMD340, please take a look HERE
MARANTZ - CD Player AC Transformer ONLY
General Information PMD340
Made in Japan
Rack case construction
Single CD unit
Supports standard CD-DA discs but ALSO CD-TEXT (extremely useful for production house produced CD's which may have special information in this area)
Large easy to read Orange backlit display
Pitch change/bend user control
Analog audio outputs (Balanced & Unbalanced)
Digital outputs (SPDIF)
Error correction method: Cross-interleave Read Solomon code (CIRC)
16 bit linear quantization
Built in test modes (explained in the Service manual)
Wired remote control ports
Now to the specific information about this PMD340 Component, the AC input stepdown transformer
Part # PDT BANDO TS1574702 PCB WA371K101-0 (P801)
This is the transformer installed in the Australian model of the PMD340 (240V AC input) but I see there is an onboard hard-wired jumper set (Service manual reference U801/U802) that appears to allow for 100V operation (Yes, 100V Japan NOT USA 115V)
NO permanent interconnections, all wiring is via connectors on the transformer.
Included is all mounting hardware.
Screw down (Philips head Copper "looking" screws although they are ferrous) making removal or replacement of the transformer "a snap" - very easy.
PCB DIMENSIONS:
85mm x 79mm x 57mm height
TESTING:
Fully functioning until the laser assembly failed, now that the complete CD drive assembly has been removed the system still works (in a fashion) with all front controls active such as track selection, pitch bending etc but of course anything that requires signals back from the laser reading do not work!
HINT: If you have a completely "dead" PMD340, check out your transformer first because it appears from the schematic that this has an internal fuse for protection - once that fuse is "blown" (non-repairable) you will have a dead system.
Measured the two secondary windings WHILE STILL CONNECTED to the main board (under load), results are:
Winding 1: 10.4V AC
Winding 2 (CT): 21.70V - 0 - 21.70V AC
Looks fine and is "close enough" to the schematic indicated voltages of 9V & 20V
I have now placed this transformer onto stiff cardboard (to support the PCB which has the transformer sitting on top of it) and completely sealed the assembly in clear plastic.
