4

ASSEMBLING CHECK

In the TEST MODE, ascertain that the assembly has been made correctly and IC BD. is satisfactory (refer to Section 8).

In the test mode, perform the following test:

(1) MEMORY TEST

RAM TEST

IC15 IC16 IC17S IC18S GOOD

IC22 IC23 IC24S IC25S GOOD

IC28 IC29S

GOOD

IC41

GOOD

IC42

GOOD

IC44 IC45S IC46 IC47S GOOD

IC91S IC92S

GOOD

IC98

GOOD

OPTIONAL SOUND BOARD:

IC2

GOOD

OPTIONAL COMMUNICATION BOARD:

IC7 IC8 IC9 IC10 GOOD

PRESS TEST BUTTON TO EXIT

Selecting the RAM TEST on the system test mode menu screen causes the on-board memory to be tested automatically. The game board is satisfactory if the display beside each IC No. shows GOOD.

(2) C.R.T. TEST

C.R.T. TEST PAGE#1

0

31

RED

GREEN

BLUE

WHITE

PRESS SERVICE BUTTON TO ANOTHER PAGE PRESS TEST BUTTON TO EXIT

C.R.T. TEST PAGE#2

In the system test mode menu, selecting C.R.T. TEST allows the screen (on which the monitor is tested) to be displayed. Although the monitor adjustments have been made at the time of shipment from the factory, color deviation, etc., may occur due to the effect caused by geomagnetism, the location building's steel frames and other game machines in the periphery. By watching the test mode screen, make judgment as to whether an adjustment is needed. If it is necessary, adjust the monitor by referring to Section 13.

PRESS SERVICE BUTTON TO ANOTHER PAGE

PRESS TEST BUTTON TO EXIT

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Sega 999-1108 owner manual Assembling Check, Memory Test