Ampex ATR 700 Service Manual

Page 1

AMPEX

AUblO-VIDEO
SYSTEMS DIVISION

ATP-700

RECORDERIREPRODUCER

OPERATION AND MAINTENANCE

CATALOG N0. 4890410-02
ISSUED: OCTOBER 1977

Page 2

AIR-700

RECORDER/REPRODUCER

OPERATION AND MAINTENANCE

AMPEX CORPORATION
AUDIO-VIDEO SYSTEMS DIVISION

Catalog No. 4890410 ~02
Issued: October 1977

Page 75

FINCH
ROLLER
SOLENOID
MOUNTING
SCREWS (3)

13920-18

Figure 5-9. Pinch Roller Solenoid Mounting Screws Location

Pull on the scale slightly to remove slack in
the string, and then press the PLAY button.

Refer to Figure 5-12 and, with a steady,
smooth motion, pull the spring scale away
from the reel against the motor torque as
shown in the figure.

Note the force indication on the spring scale;
then press the STOP button. Reading should
be «22.5 oz (75 grams).

lf reading is not correct, turn power off and
adjust as follows:

AMFEX 4890410-02

vi

a. If top rear panel is still on the machine,
remove as described in paragraph 5.9.

b. On the top of the machine, refer to
Figure 5-13 and locate resistor R182.
Loosen screw and adjust in direction
indicated in Figure 5-13 to increase
or decrease tension.

c. Turn power on and again measure back
tension. If not 22.5 oz (759), turn power
off and repeat 7b until correct.

With power on, set REEL hub size selector to
LARGE, and repeat steps 3 through 6.

5-9

Page 136

6-4 1

Assembly No. 1418952. Amplifier Section

AMPEX 4890410-02

fill

Page 147

JEDEC NO
ITEM AMPEX REFERENCE
DESCRIPTION 05 MFR.
, N0, PART NO. NUMBER PART NO.
I
1413983501 REPRODUCE LINE AMFLIFIEFI PWA (NHA1415952)
1 5119235 0251.252 TRANSISTOR 2551000
2 559253 5255254 755515151105 254542
3 509-303 0255,256 TRANSISTOR 23C82B
4 509-235 5257,2512 TRANSISTOR 25c1ooo
5 509-233 0259 15451515105 25A542
6 809~235 0260,261 TRANSISTOR 25C10°0
7 805-663 5251.254 DIODE 152473
3 055549 5251.252 555157055555051on1<.1/4w,5%
9 075.505 5253 5E$15105.cA555~,551<. 1/4w. 5%
10 055532 5254 RESISTOR, CARBON. 18K. mm, 5%
11 0655665 255256 RESISTOR, CARBON, 1K,1/4W, 5%
12 0155529 5257.255 55515105,c4550~.e.51<.1/4w.5%
\ 13 066669 5259.250 55515105. CARBON. E,2K, 1/4w, 5%
1 14 055539 5251, 252 55515105. CARBON, 2.2K, 1/4w, 5%
15 055-712 5253,254 55515105. 12555011. 22K. 1/4w. 5%
15 066-938 5255.266 RESISTOR, CARBON, 47 OHM, 1/4w. 5%
17 055.553 5257.258 55515105. c45aow. 4.7K, 1/4w, 5%
15 1155.530 5259.270 55515105, c55505. 10K, 114w. 5%
19 055555 5271274 515515105, c55aoN, 155. um. 5%
20 955-555 5275.275 555151-05. CARBON, 2.7K. 1/4w. 5%
21 055512 5277250 55515105, CARBON. 100 OHM, 1/4w, 5%
22 5557555 5251.252 5E$15105.CA550N.2.7K,1/4w.5%
23 065-668 R253 RESISTOR, CARBON, 427K.1/4W. 5%
24 065-665 R254,235 RESISTOR, CARBON, 1K,1/4W, 5%
25 056-512 H236,287 RESISTOR, CAFIBON,1OO OHM,1/4W. 5%
25 055-555 5255 55515105. CARBON, 1K. 1/4w. 5%
27 BDQ~282 (3251.252 CAPACITOR] ELEC, 1 MFD, 50V
; 25 505.249 5253 CAPACITOR. ELEC. 22 MFD.16V
1 29 5095273 5254.255 CAPACITOR, MY LAFI. 0.01 MFD. 50v, 5%
I 30 8091249 C256,257 CAPACITOR, ELEC, 22 MFD,16V
31 809»262 ($258,259 CAPACITOR, MICA, 22 PFD, 50V,10%
32 809A268 (3260.261 CAPACITOR, MICA, 47D PFC, 50V.1D%
33 809-266 C262,263 CAPACITOR, MICA, 180 F'FD. 50V,10%
:4 509255 c254,255 545451105, use. 2.2 MFD. 25v
35 509-260 C256 CAPACITOR, ELEC, 22 MFD, 35V
36 809-282 -��267,255 CAPACITOR, ELEC, 1 MFD, 50V
37 5095300 VH251,252 RESISTOR, SEMI FIXED. 50K
33 809297 VR253,254 RESISTOR, SEMI FIXED. 2K
39 509.219 1.251.252 mouc-ro5
40 1418965 SCHEMATIC
1
1
i
1 SHEET1 OF 1
AMPEX 4390410412 6-57

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