Technics SL-1500C

18
5.6. Auto lift-up function does not operate correctly
CKB4
(GND)
CKB1
(LIFT_UP_OFF_L)
MAIN PCB
P1002
P4002
P1005
CKE5
CKE4
Connector
P1005
MAIN PCB
Autolift-up
switch
O
UT
OFF ON
L
R
LINE OUT
AUTO LIFT UP
L
R
OFF ON
Back of main unit
Does
the auto lift-up switch on the
rear side set to “ON”?
Auto lift-up function does not operate correctly
YES
NO
YES
Set the auto lift-up switch to “ON”.
Is
the distance
between 51.5 mm to
60.5 mm?
Measure distance between the
center spindle and the Stylus tip
reached detection point. (See "7.2.
Auto lift-up function Adjustment.)
NO
Replace
Tone Arm Unit.
Set auto lift-up point, position 1 or 2
according to the distance. (See "7.2.
Auto lift-up function Adjustment.)
Still does not operate correctly
NO
Insert correctly.
Is the FFC between
P1002 on MAIN PCB and
P4002 on PHONO OUT PCB
inserted correctly?
Replace
PHONO OUT PCB.
Replace MAIN PCB.
What voltage between
CKB1 and CKB4 (GND)?
Turn off the unit.
Is the correct value of
resistor between CKE4 and CKE5?
Normal:18 to 22 ohm
0V (Lift-up OFF)
＋5V
(Lif-up ON)
YES
NO
YES
Replace
Tone Arm Unit.