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(before installing rear plate). Snap firmly into place.
Step 8
– Remove backing of double stick tape on back of rear plate and Install the rear plate
along with the two fuse holders and the two speaker jacks. The impedance selector will be
installed later. Refer to drawing for proper component alignments (drawing 5.15c).
Tube / Solid State Rectifier Select Switch Installation
Step 1
– Drill a 1/4” hole through the back panel and chassis.
This hole should be centered between the mains fuse and the
IEC AC power entry connector (photo 5.8a).
Step 2
– Debur this 1/4” hole & install the mini DPDT switch.
Feedback select Switch Installation
Step 1
– Drill a 1/4” hole through the back panel
and the chassis. This hole should be centered
between the impedance selector and the nearest
speaker jack (photo 5.9a).
Step 2
– Debur this 1/4” hole and install the mini
SPDT (center off) switch.
Impedance Selector Installation
Step 1
– Enlarge the impedance selector hole to 13/32” with either a
13/32” drill bit or hand reamer.
Step 2
– Debur this 13/32” hole and install the impedance selector
switch. Align this switch with the switch limit pin closest to the chassis
surface (photo 5.10a).
Power Transformer Wiring,
Step 1
– Wire the power transformer primary (black and brown wires) according to your local
AC mains supply to the power switch and the AC IEC connector. (drawings 5.11a and 5.11b).
Step 2
– Wire the appropriate 18AWG wire between the power switch and input fuse holder
(drawing 5.11a or 5.11b).
Step 3
– Wire the appropriate wire (18 AWG black) between the AC fuse holder and the AC
IEC connector (drawing 5.11a or 5.11b).
Step 4
– Wire the rectifier filament (yellow wires) to the rectifier tube (drawing 5.11a or 5.11b).
Step 5
– With the standby switch, insure the word “MEXICO” on the side of the switch is
facing the lamp. Wire the HV (red wires) to the standby switch (drawing 5.11a or 5.11b).
Step 6
– Wire the filament center tap (green with yellow stripe) to the grounded solder
terminal G2 (drawing 5.11a or 5.11b). Save the remaining wire for future use.
Step 7
– Wire the HV center tap (red with yellow stripe) to the grounded solder terminal G1
(drawing 5.11a or 5.11b).
Step 8
– install a wire (recycled wire from filament center tap) between the AC IEC connector
and the appropriate grounded solder terminal G3 (drawing 5.11a or 5.11b).
TubeDepot.com 15
5.8
5.9
5.10
5.11
photo 5.8a
photo 5.9a
photo 5.10a
Содержание JTM45+
Страница 17: ...TubeDepot com 13 Drawing 5 5a Drawing 5 5b T65 T63...
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Страница 27: ...TubeDepot com 23 drawing 5 15c...
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Страница 38: ...10 Schematic 34 TubeDepot com...