Panasonic KX-FLC413UA Service Manual ▷ View online
49
KX-FLC413UA
6.12.9. Drum Detection
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KX-FLC413UA
6.12.10. Toner Sensor.... "TONER EMPTY", "TONER LOW", "CHANGE DRUM"
The Sensor detects whether or not the Drum unit and the toner are present.
When there is not Drum unit, Hall IC (IC60) turns off, and the input signal of IC107-7 pin (Digital P.C.B) becomes a High level
over 9s. When the Developer unit is set, Hall IC (IC60) turns ON/OFF. If the time of IC107-7 pin's Low level is under 600ms,
there is enough toner in Developer unit, if not, toner is near empty.
When there is not Drum unit, Hall IC (IC60) turns off, and the input signal of IC107-7 pin (Digital P.C.B) becomes a High level
over 9s. When the Developer unit is set, Hall IC (IC60) turns ON/OFF. If the time of IC107-7 pin's Low level is under 600ms,
there is enough toner in Developer unit, if not, toner is near empty.
Toner Sensor
The rest of toner is detected by the move speed of the magnet put on the pendulum of Mixing Paddle. The pendulum is pushed
up by the Mixing Paddle, then it falls down by its own weight. The rotation speed of paddle is set slower than the one of pendu-
lum which falls down by its own weight. When the toner is still left, the pendulum falls and stops on the toner, then pushed by the
paddle, it starts to rotate. When no toner is left, the pendulum falls to the bottom. Consequently the contact time between the
magnet and steel becomes short when toner is left and long with no toner.
up by the Mixing Paddle, then it falls down by its own weight. The rotation speed of paddle is set slower than the one of pendu-
lum which falls down by its own weight. When the toner is still left, the pendulum falls and stops on the toner, then pushed by the
paddle, it starts to rotate. When no toner is left, the pendulum falls to the bottom. Consequently the contact time between the
magnet and steel becomes short when toner is left and long with no toner.
State
Display
Signal (IC107-7pin)
Toner Set (full)
-
Low level = about 0.5s
Near Empty Toner
TONER LOW
Low level>1.0s
Mixing Paddle does not rotate
(“CHANGE DRUM”)
(“CHANGE DRUM”)
CHANGE DRUM
High level fix or Low level fix
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KX-FLC413UA
6.12.10.1. Toner Detection Flow
CAUTION:
1. Toner low can be judged by continuous 5-times TONER LOW signal at only printing.
(It is not executed at.)
2. Toner full can be judged by continuous 3-times TONER FULL signal at initialization.
(It is not executed at printing.)
3. In the ordinal operation, “CHECK DRUM” is displayed when TONER EMPTY sensor does not generate a signal for 3.1 sec-
onds.
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KX-FLC413UA
6.13. Operation Board Section
The unit consists of a LCD (Liquid crystal display), KEYs and LEDs (light-emitting diodes). They are controlled by the Gate Array
(IC101) and ASIC (IC107: on the DIGITAL BOARD).
The key matrix table is shown below.
(IC101) and ASIC (IC107: on the DIGITAL BOARD).
The key matrix table is shown below.
1. Key Matrix
a. Hard Scan
*LED7 should be set to KSL4. "8 x 5" key matrix is executed by hardware scanning.
2. LED
• AUTO ANSWER LED ON/OFF port---LED2
• NEW MESSAGES LED ON/OFF port---LED3
• NEW MESSAGES LED ON/OFF port---LED3
KIN0
KIN1
KIN2
KIN3
KIN4
KIN5
KIN6
KIN7
KSL0 S1
S2
S3
S4
MONITOR
FAX START
S5
LOWER
KSL1 PLAYBACK
4
5
6
FLASH
MENU
PREV
HELP
KSL2 LOCATOR/INTERCOM
*
0
#
MUTE
STOP
VOL-
COPY
KSL3 ERASE
7
8
9
REDIAL/PAUSE QUICK SCAN
SET
AUTO ANSWER
KSL4 GREETING
1
2
3
CID SEARCH
NEXT
VOL+
ABH
CN102
CN110
IC107
G/A
LCD MODULE
CN101
8x5
KEYS
MATRIX
(Hard)
KEYS
MATRIX
(Hard)
LED
DIGITAL BOARD
OPERATION BOARD
GATE ARRAY IC
IC101
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