Hafler DH-200 User Manual download pdf (Page 8)

Prepare a 7” green wire. Connect one end to terminal

LB. (S-2). Place this wire towards the center of the

chassis.

20 Ll Prepare a 10” white wire and a

10”

green wire. Starting

with the white wire

3/4"

longer, twist them together. Con-

nect the projecting white wire to red terminal RR. (S).

Connect the green wire to terminal RB. Place these

wires off to the right.

2 1

Prepare a

1/2" green wire. Connect one end to terminal

RB. (S-2). Place this wire towards the center of the

chassis.

Prepare a 16” green wire, but strip

1 1/4"

of insulation

from one end. Prepare a 15” white wire. Start with the

normally stripped

(l/4”)

ends even, and twist these wires

uniformly together. Thread the longer bared end of the

green wire through LS short lug

from the top left,

then through GLlug

#3,

and connect it to RSshort lug

#4.

Solder only LS lug

#2.

Connect the corresponding end of

the white wire to LS lug

#l.

(S). Place this wire up under

the chassis rear lip, above the output terminals, and off

to the left.

Prepare a

6 1/2"

green wire. Connect one end to CL lug

#3.

(S2). Place this wire over the rear of the chassis.

Prepare a 10” green wire and a 10” white wire. Twist

these together with the ends even. Connect the green

wire from the right to RS short lug

#4.

(S-2). Connect the

white wire to RS lug

#5.

(S). Place these wires off to the

right.

Prepare two 22” white wires, and twist them together

throughout their length.

8”

in from one end of the pair,

cut

one

of the wires, and unwind it about

1/2" in each

direction from the cut. Strip

1/4"

of insulation from each

of these cut ends. Place the longer portion of the wire

along the lower front edge of the chassis, with the break

at the terminal strip TS. Connect the cut end from the left

to TS lug

#2.

Connect the other end to the

lower

hole of

TS lug

#5.

(S). Place this pair along the front edge of the

chassis, under the power switch, with the ends project-

ing from the front corners of the chassis.

Select a 1 megohm resistor (brown-black-green) and

trim the leads to

1/2”.

Connect one lead to TS lug

#2.

(S3).

One of these 3 leads has already been soldered to the

lower lug hole. Connect the other lead to TS lug

#3.

Select the diode and trim its leads to

1/2”.

Note that one

end of the diode is marked with a stripe (or an arrow

head will point to that end). Connect the marked end to

TS lug

#4.

Connect the other lead to TS lug

#3.

(S2).

Prepare a 4” green wire. Connect one end to TS lug

#4.

Select a spade connecting lug, and solder it to the other

end. Place this wire down against the chassis, and con-

nect it to the PS lug on the right, near the edge of the

chassis.

The proper way to attach a spade lug to a wire is to first

cut the bared wire end to the right length (no more than

1/4"

so that the insulation will be securely gripped by the

longer, outer tabs, while the wire does not protrude into

the spade clamp area. Tin the bare wire end. Bend the

shorter, middle set of tabs tightly around the bare wire,

and then bend the longer tabs around the insulation.

Then flow solder into the joint around the bare wire,

keeping the solder away from the spade section.

Prepare a 2” white wire. Connect one end to FC lug

#2.

(S). Select another spade lug, and solder it to the other

end. Connect it to the PS middle lug.

Select the 0.39 mfd

(.39K)

capacitor and trim its leads to

1/2"

Connect one lead to TS lug

#4.

(S3). Connect the

other lead to TS lug

#5.

Select the two large round capacitor brackets, the two

large capacitors, and 6 sets of

hardware. Place a

bracket around the bottom of each capacitor, and fasten

it snugly with one set of hardware through the clamp.

Note the direction of insertion of the screw for easy ser-

vicing access in the future. The clamps need not be

tightened now

just made snug. Place each assembly

on the chassis, at CL and CR, noting the position of the

clamp, and fasten them securely. Be sure no wires are

trapped by the bracket. Then loosen the clamps, and

position the capacitors so that each + terminal is posi-

tioned as in the pictorial diagram. The + terminal will

usually be so marked, but if not, it may be identified by a

red dot. Note that the + terminal of CL is nearest the

terminal of CR. Make sure the capacitors are seated

against the chassis and tighten both clamps.

Select the 4 plain solder lugs and then 4 short

#lO

SEMS

screws (with lockwasher attached). Install these in the

capacitors, with the lugs pointing as in the diagram.

Prepare a 6” green wire. Connect one end to DB lug

#l.

(S). Connect the other end to CL lug

#l.

Prepare a 4%” green wire. Connect one end to FL lug

#l .

(S-2). Connect the other end to CL lug

#l.

(S2).

G Prepare a 6” white wire. Connect one end to DB lug

#4.

(S). Be sure this is the + terminal of the rectifier. Connect

the other end to CR lug

#2.

Prepare a

4 3/4"

white wire. Connect one end to

FRlug

#3.

(S-2). Connect the other end to CR lug

#2.

(S2).

37 •1 Remove all insulation from a 3” white wire. Connect one

end to CL lug

#2.

(S). Connect the other end to CR lug

#l.

(S).

Select the power transformer, the 4 flat washers, and the

4 sets of

#10

hardware. Position the transformer with

the red leads to the center rear of the chassis, and the

black and black/white leads towards the power switch.

If the transformer is the special multiple voltage version,

the additional leads should be placed as shown else-

where in this manual for the desired line (mains) voltage.

The red/yellow lead will likely be the correct length. If

you wish to shorten the red leads for neatness in con-

necting them to the rectifier terminals, it is easier to strip

them before the transformer is mounted.

Place the white pair of wires under the front chassis lip.

Install a flat washer on top of each transformer foot after

the screw is inserted from below, and then add the nut.

Be sure no wires are trapped.

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Hafler DH-200 User Manual Page 8

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