Sony TAV-L1 (serv.man5) Service Manual ▷ View online
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3-2. LIFT circuit
MAIN SYSTEM
CONTROLLER
CONTROLLER
(IC602)
(5) Detection of LIFT motor speed
SUB SYSTEM
CONTROLLER
(IC901)
LIFT MOTOR
DRIVER
(IC916)
SPEED
DETECT
SENSOR
(PH1251)
LIFT MOTOR
ON/OFF SW
(IC917)
FG
19pin
19pin
EEPROM
(IC918)
STOP
POSITION
DETECT
SENSORS
(Q1261,
PH1241,
PH1241,
Q1262,
PH1242)
STOP
POSITION
DETECT
SENSORS
(Q1261,
PH1241,
Q1262,
PH1242)
LIFT MOTOR
(M901)
EMERGENCY
STOP
SONSORS
(S1211,
S1222,
S1201,
S1202,
S1203,
S1201,
S1202,
S1203,
S1204)
LIFT ERROR 01
The rotating of LIFT motor (M901) is checked by SUB SYSTEM
CONTROLLER (IC901) with SPEED DETECT SENSOR (PH1251)
CONTROLLER (IC901) with SPEED DETECT SENSOR (PH1251)
If LIFT motor rotating speed is too fast or slow, it is detected by SUB SYSTEM
CONTROLLER (IC901 100pin) and shows “LIFT ERROR 01” on FL display.
CONTROLLER (IC901 100pin) and shows “LIFT ERROR 01” on FL display.
Please refer to Error code table on page 6 of Service manual.
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3-2. LIFT circuit
MAIN SYSTEM
CONTROLLER
CONTROLLER
(IC602)
(6) Detection of mechanical emergency
SUB SYSTEM
CONTROLLER
(IC901)
LIFT MOTOR
DRIVER
(IC916)
SPEED
DETECT
SENSOR
(PH1251)
LIFT MOTOR
ON/OFF SW
(IC917)
EEPROM
(IC918)
STOP
POSITION
DETECT
SENSORS
(Q1261,
PH1241,
PH1241,
Q1262,
PH1242)
STOP
POSITION
DETECT
SENSORS
(Q1261,
PH1241,
Q1262,
PH1242)
LIFT MOTOR
(M901)
EMERGENCY
STOP
SONSORS
(S1211,
S1222,
S1201,
S1202,
S1203,
S1201,
S1202,
S1203,
S1204)
STOP
There are two types of mechanical emergency.
First one is sandwiched finger and so on between TV part and LIFT unit when
LIFT unit moves to UP.
LIFT unit moves to UP.
Second one is sandwiched between LIFT unit and the ground when LIFT unit
moves to DOWN. (Child, pet, book, etc.)
moves to DOWN. (Child, pet, book, etc.)
EMERGENCY STOP SW for UPPER DIRECTION (S1211, S1221) are used for
the first emergency.
the first emergency.
EMERGENCY STOP SW for LOWER DIRECTION (S1201-S1204) are used for
the second emergency.
the second emergency.
When emergency happens, “STOP” is displayed on the front panel display.
It is explained on page 79 of “Operating instructions”.
And, please be noted that the lift unit does not move when headphones are
connected. In this case, “Unplug Headphones” will be displayed.
connected. In this case, “Unplug Headphones” will be displayed.
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3-3. TV operation for LIFT
(1) TV display control
LIFT unit : DOWN
⇒ Normal TV operation
LIFT unit : UP
⇒TV operation stops
Lift Unit
TV block in TAV-L1 operates individually.
When LIFT unit moves UP, there is no need to show TV screen on the flat
display.
display.
In this case, TAV-L1 turns off the backlight of TV screen.
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3-2. TV operation for LIFT
(2) TV Backlight control
SUB SYSTEM
CONTROLLER
(IC901)
TV
circuit
BACKLIGHT_IN
1pin
1pin
BACKLIGHT_OFF
2pin
2pin
PANEL_FAIL_OUT
5pin
5pin
PANEL_FAIL_IN
93pin
93pin
Please refer to Block diagram on page 52 in the Service manual.
BACKLIGHT_DET signal goes through in SUB SYSTEM CONTROLLER from
1pin to 2 pin basically.
1pin to 2 pin basically.
And, PANEL_DET signal goes through in SUB SYSTEM CONTROLLER
(IC901) from 93pin to 5 pin basically.
(IC901) from 93pin to 5 pin basically.
SUB SYSTEM CONTROLLER watches the condition of these signals from TV
circuit.
circuit.
When Lift unit is UP, the backlight is off.
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