Preliminary Starting Procedure

TM 11-6625-2478-12

3-4. Initial Checking and Adjustment

Monitor Input SM-627/AYM-9 to the next higher category

of Equipment Before placing Test Set, Control Monitor-

of maintenance.

e. Set Simulator,

Monitor Input SM27/AYM-9 ON-OFF switch to OFF.

Recording Head AN/AYM-9 in operation, perform a go,

f. Disconnect cables CX-12723/AYM-9 and CX-

no-go check to verify that the equipment is operable.

12725/U.

Connect the equipment as shown in figure 3-3 and per-

form the procedures of paragraphs 3-5 and 3-4 to ac-

3-7. Control-Monitor C-8338/AYA-10

complish this check.

Test Procedures With the SM-627/AYM-9 prepared for

3-5. Preliminary Starting Procedure

use as de- scribed in paragraph 3-3, test the C-338/AYA-

10 as follows:

(fig. 3-1)

a. On the SM?27/AYM-9, set switches to positions

With Test Set, Control Monitor-Recording Head

specified in paragraph 3-5.

AN/AYM-9 prepared for use as described in paragraph

b. On the C-8338/AYA-10, set the switches and con-

34, set Simulator, Monitor Input SM-627 AYM-9 switches

trols to the following positions

to the following positions:

Switch

Setting

Switch/Control

Setting

FOCAL LENGTH--NORMAL

NORMAL

DAY

RESISTOR TEST A

OFF

MONTH

RESISTORTESTB

OFF

YEAR

SWITCH TEST-RESISTOR

SWITCH TEST

FOCAL LENGTH

TEST + 5VDC POWER

KA60-2 EXP

RHA TEST SELECT

KA60, IR/SLAR,

SORTIE NO

0000

CDM

TAKING UNIT

000000

RHA MODE

SINGLE

KA60-1 EXP

BCD THIMBWHEEL AND

OFF

KA76 EXP

PANEL SWITCH TEST

HRS

DECIMAL THUMBWHEEL

OFF

MINS

SWITCH TEST

SECS

DECIMAL THUMBWHEEL

OFF

MODE

ALT

AND PANEL SWITCH TEST

POWER

OFF

ON-OFF

OFF

3-6. Operating Procedure

c. Connect the equipment as shown in figure 34.

(fig. 3-1) The following instructions provide for

d. On the SM-627/AYM-9, set the ON-OFF switch

energizing Simulator, Monitor Input SM627/AYM- and

to the ON position.

per- forming a preoperational check of the equipment. If

e. Set the RHA MODC switch to CONTINUOUS.

during performance of steps a through d any of the

f. On the C-8338/AYA-10, the cathode ray tube shall

specified indicator lamps fail to light, refer to chapter 4

display a rotating circle of dots near the circumference

for troubleshooting procedures.

a. Set Simulator, Monitor Input SM627/AYM-9 ON-

of the phosphor (fig. 3-5). Adjust the INTENSITY

control as required.

OFF switch to ON. The following indicator lamps shall

g. On the SM?27/AYM-9, set the RHA TEST SE-

light: -522VDC, +500VDC, -80VDC, 115VDC, 6.3VAC,

LECT switch to KA76.

115VAC, GO, and + 5V.

h. On the C-8338/AYA-1O, the cathode ray tube

b. Press the BCD+3--PRESS TO TEST push- button

shall display a rotating circle of dots around the center of

switch. All BCD+3 indicator lamps shall

the phosphor (fig. 3-6).

light.

c. Firmly press the DECIMAL-PRESS TO TEST

i. On the SM-627/AYM-9, set the RHA TEST SE-

LECT switch to PHOSPHOR.

pushbutton switch. All DECIMAL indicator lamps shall

j. On the C-8338/AYA-1O, the cathode ray tube

light

d. Press the BCD-PRESS TO TEST pushbutton

shall display a raster (fig. 3-7).

k. On the SM-627/AYM-9, set the ON-OFF switch to

switch. The following indicator lamps shall light: BCD,

the OFF position.

BATTERY INDICATOR, SINGLE PULSE INDICATOR,

l. Disconnect cables CX-12720/AYM-

and CX-

and FAILURE.

12723/AYM-9.

NOTE

If the FAILURE indicator lamp lights at any time other

than during the above test,

terminate the test procedure and refer Simulator,

3-6