Pioneer PLX-1000, Service Manual

Page: 13 / 44

13
PLX-1000
5 6 7 8
5 6 7 8
A
B
C
D
E
F
Yes
N o
Replace the switch.
OK
The pitch does not change even if
the TEMPO slider knob is moved.
Does the tact switch
(S W 301) on the MAI N
PCB Assy work?
Does the tact switch
(S W 301) on the MAI N
PCB Assy work?
Does the tact switch
(S W 301) on the MAI N
PCB Assy work?
Does the tact switch
(S W 301) on the MAI N
PCB Assy work?
N o
Replace the switch.
N o
Replace the switch.
N o
Replace the switch.
Yes
Yes
Yes
Yes
The TEMPO cannot be reset.
N o
Replace the switch.
The tempo range cannot be
changed.
Yes
N o Only the LEDs may be in failure.
Replace the LEDs (D313–315) on
the MAI
N PCB Assy.
If you move the TEMPO slider knob to
the end of the + side then press the
TEMPO RA N GE button, do the
strobe patterns change?
N o
The V R data may not be input to the
CPU (thus, the same rotation speed is
maintained). Check if
V R301 on the
MAI N PCB Assy has any problem,
referring to "The pitch does not change
even if the TEMPO slider knob is
moved." If it does not have any
problem, replace the MAI
N PCB Assy.
If you move the TEMPO slider
knob while the TEMPO RESET
LED is unlit, do the strobe
patterns change?
Yes
N o
Is the LED (D312) on the MAI N
PCB Assy lit? If it is not, only the
LED (D312) may be damaged but
the TEMPO RESET button may
work properly. Replace the LED (D312).
N o
Is the LED (D312) on the MAI N
PCB Assy lit? If it is not, only the
LED (D312) may be damaged but
the TEMPO RESET button may
work properly.
Replace the LED (D312).
Yes
N o
Replace the D30 8 –311 on the
STROBOSCOPE Assy,
STROBOSCOPE Assy, or
AC&PLAY PCB Assy.
*Check method with the aid of a tester
W hen the V R is turned toward TEMPO +, the resistance between D31 8
and G N D must become closer to 0 ohm.
The resistance between D316 and G N D must be approximately 1.5 kohms.
W hen the V R is turned toward TEMPO –, the resistance between D31 8 and
G N D must be approximately 1.5 kohms. The resistance between D316 and
G N D must become closer to 0 ohm.
Strobe Lock is not available.
Are the strobe LEDs lit?
Yes
Yes
Yes
N o Replace
V R301on the MAI N PCB
Assy.
Does V R301 on the
MAI N PCB Assy
work* properly?
Yes
The V R data may not be input to the CPU or the motor may be
uncontrollable.
Replace the MAI
N PCB Assy then the D.D. MOTOR Assy, in that order.
The TEMPO Reset command may not be input to the CPU or the motor
may be uncontrollable. Replace the MAI
N PCB Assy then the D.D. MOTOR
Assy, in that order.
The TEMPO Range command may not be input to the CPU or the motor
may be uncontrollable.
Replace the MAI
N PCB Assy then the D.D. MOTOR Assy, in that order.
The same rotation speed is maintained.
1
The V R data may not be input to the CPU. Check if V R301 on the MAI N
PCB Assy has any problem, referring to "The pitch does not change even
if the TEMPO slider knob is moved."
2
The rotation speed may not be controlled properly.
Replace the MAI N PCB Assy.
3
The motor may be in failure. Replace the D.D. MOTOR Assy.
N o
Does the TEMPO RESET LED
light or go dark when the TEMPO
RA N GE button is pressed?
Replace the LED (D312) on the
MAI
N PCB Assy.
Replace the LED (D312) on the
MAI
N PCB Assy.
Yes
Yes
Yes
N o
Does the TEMPO RESET LED
light or go dark when the
S W 301 on the MAI N PCB Assy
is pressed?
Yes
N o
If you move the TEMPO slider knob to
the end of the + side while the TEMPO
RESET LED is unlit then press the
TEMPO RA N GE button, is strobe locked?
If you move the TEMPO slider knob to
the end of the + side while the TEMPO
RESET LED is unlit then press the
TEMPO RA N GE button, do the strobe
patterns change?
If you move the TEMPO slider knob to
the end of the + side while the TEMPO
RESET LED is unlit then press the
TEMPO RA N GE button, do the
strobe patterns change?
[2] Abnormality regarding the operating elements and LEDs
N o
Remove any foreign matter.
Is there any foreign
matter between the
turntable and motor?
N o
Remove any foreign matter.
Is there any foreign
matter between the
turntable and motor?
Does the tact switch
(S W 302) on the
MAI N PCB Assy work?