Casio QV-770 Service Manual page 12

(1) Transaction
6. Black color display
Provides black signal to
LCD and TV monitor (Black
level of VIDEO standard)
Disables Auto Power Off
7. APO OFF display
function. This function can
be utilized in REC or PLAY
modes.
Used for IrDA test together
8. IR TEST MASTER
display with IR TEST SLAVE. This
test sends ENQ (OX ø5)
signal for 2 seconds with
10ms interval (115Kbps
data transfer speed).
(2) Display
Displays black on LCD and TV monitor.
Normal REC or PLAY modes
Immediately after se-
FACTORY TEST
lecting IR TEST MAS-
MASTER
TER and pressed the
ACTIVE
shutter button.
When the unit received
FACTORY TEST
ENQ signal.
MASTER
OK
SUCCESS
When the unit received
FACTORY TEST
a signal other than ENQ.
MASTER
NG
If there is no answer for
FACTORY TEST
2 seconds.
MASTER
NG
TIMEOUT
(3) Check
Returns to Test mode dis-
play by [+] or [-] buttons.
The unit returns to normal
mode when power switch is
turned off.
Make sure that the display
This mode is disabled when
indicates OK.
the unit is turned off.
(4) Supplement