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GE-622
CIRCUIT DESCRIPTION
2-3. Input sensitivity
a
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Vec=Vrer=5.0V, OdB= 280mV,
Absolute accuracy +3LSB= +59mV
|
Input (dB) - Input voltage (mV)
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Pe
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20
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Ps At
| 37
PS
789.15
Segments turn on if A-D register has equal or over value compared with Nore table's value.
3. TEST MODE
|
3-1. Test Mode with key switch setting method
1. Press the M/R key and turn on (SEGMENT CHECK
|
MODE).
2. Press the FLAT key and turn on (ALL SEGMENT
LIGHT MODE).
_ 3. Press the EFFECT key and turn on (SELECT TEST
MODE).
,
3-2. Resetting method
<if return another test mode in test mode, refer to
the followings.>
In SEGMENT CHECK MODE and ALL SEGMENT
LIGHT MODE, press any key. In SELECT TEST MODE,
press any key except FREQUENCY UP/DOWN key.
After press the key, change to normal display mode. It
is impossible to be changed in DEMO mode.
1. SEGMENT CHECK MODE : Press LOUDNESS key
2. ALL SEGMENT LIGHT MODE : Press Al AUTO key |
_ 8. SELECT TEST MODE : Press REC MODE key
¢ Contents of operation
|
ae If the test mode is selected, the short check of the
segment
terminals
is indicated. If any key is
pressed, the device return to the normal indication
—
but it is kept in test mode. —
1-2. If the short check of the segment terminals is indi-
_ cated, the 5 bars of all bands lighting bars move up
at the intervalof 256msec. The 14 segment indica-
_ tion on the right continue lighting in order of B12,
B14, B3, B8, B7, B6, B11, B9, B10. B2, B1, B13,
BS, B4, B15, B12, B14 .....
|
1-3. Set the contents of MANUAL PRESET MEMORY
as follows.
es
M1 : FLAT (all, OdB) M2 : ALL MAX {all +12cB)
M3 : ALL MIN (all -12dB)
1-4. The EQ LEVEL UP/DOWN operation is set to three
points of +12dB, Odb, and —12dB at all the fre-
quency.
.
1-5. EQ: on.
1-6. Audio signal : TUNER (VIDEO signal : BS/LD.
2-1. If the system is set to the test mode, all the indica-
tor elements lights up. If any key is pressed, the
system returns to normal indicating condition, but
it is still in the test mode. The operation in test
_ mode is the same as 1-3,1-4,1-5, and 1-6.
3-1. If the system is set to the test mode, it performs
the selecting operation according to the FRE-
QUENCY UP/DOWN keys.
3-2. The indicator shows DECK->CD->TUNER->BS/
LD—VIDEO—DAT-DECK-— eeeeee in every time.
the UP key Is pressed (reverse order is. DOWN
key).
3.3, If a key other than the FRQUENCY UP/DOWN
_ keys is pressed, the system returns to normal indi
cation. But it is still in the test mode. Th operation
in test mode is the same as 1-3, 1-4, 1-5, and 1-6.
« Release test mode —
|
After set power to off, turn it on again.
¢ Set the initial test mate
After set power to off, turn it on with plessing MEM-
ORY key.
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