Technics SL-PS670D

SL-PS670A
SL-PS670A |
m Automatic Adjustment Results Display Function
_ (Self-Check Function)
This unit has a function that uses the FL display board to indicate the results of automatic adjustment of the
servo-circuit (tracking, focus, offset, etc.) as error codes. The error code display indicates the location of
failures from automatic adjustment circuit.
The following procedure displays the error codes from the self-diagnostic function.
e Procedure for displaying automatic adjustment codes
1. Plug in the cord and wait for the STANDBY LED to flash, indicating the unit is in standby status.
2. Turn on the power supply switch while pressing the STOP ( gg), PAUSE (§[) and PLAY (p> ) buttons at the same time.
3. The “F°&_£_” code is displayed 2 or 3 seconds lIater to indicate the automatic adjustment results mode.
4, Push the OPEN/CLOSE button to open the disc tray and then load the test disc (SZZP1054C).
5, Push the OPEN/CLOSE button again to close the disc tray.
6. After automatic adjustment, the code display indicates the location of failures in the servo circuit.
® Troubleshooting using the automatic adjustment code
Notes:
1. If “E-00" is displayed as an error code, this means no error was found.
2. Check the disc and laser-detector lens for damage, contamination or stains.
© Take out the test disc and turn off the power, which terminates the automatic adjustment results mode.
Signal to check
Probable cause
display Location
Signal
MDATA imimy 4.8V
MCLK PLAY sv
ov
IC702 pin
IC702 @® pin
IC702 @) pin
Focus and
tracking offset
@ Clocks X1 and X2, power supply VDD,
E01
adjustments
not
and
reset/RST,
allon
IC7062.
1C702
qj
pin}
SENSE
n=
completed
in
@MDATA,
MCLK, MLD,
and
SENSE
iC702
a
pin}
AST
specified
time
signals
to/from mechanism
controller.
;
ae
; Sy
a
C702
&
pi
we]
tiles
IC702 @ pin AMES AN SS
IC702 @ pin| FE WAI 24
IC702 @ pin| TE se 20 2.4V
E03 @ Scratches or contaminants on disc hand
aaa Seenmeene @Focus and Tracking servo circuits (check | 'C702 @ piny TRD 24V 2.4V
E-0B
ae
waveforms,
voltages,
and
part
values.)
C702
@
pin]
KICK
2.4V
ae
@®
Spindle
driver
circuit
IC702
@
pin]
/FLOCK
49V
|
@ Optical pickup
1702 pin | /RF DET 4.8V
TJ701 Wl 3.4V
\C702_@ pin| STAT ov
Best “eye” (PD 1C702 @0 pin} FBAL 2.5V + 1.25V 2.5V + 1.25V
balance) @ Scratches or contaminants on disc TJ701 AF roa
surface
VE
3.4V
eee ot @ Focus servo circuits (check wavefor ae
completed in La 1C702 @2 pin FE AA? ov
specified
time
vetiages
ehidpart
vallles:)
ams.ow/Dv.
Be 4 © Optical pickup IC702 8 pin ov
@ Scratches or contaminants on disc
surface
@ Focus and Tracking servo circuit (check
waveforms, voltages, and part values.)
© Optical pickup
Focus or Tracking
gain adjustment
not completed in
specified time
period.
IC702 @ pin WAAL,
1C702 4) pin res” 2
(O70 pin| LOCK
OV
2.4V
E-08
E-0A
AV
—29—
Normal voltage and
waveform values
@ Function of IC Terminals
@ 1C401 (UPD78042A014)
ee
Name
1 | 7G
lo FL grid drive signal output
7 1G
Ps | woo |= |Powersumaveay |
8 | WGIK | |tisroneessercommandetock
[78_[ “WoRTA | 6|[eerecssnrconmand data
Pi StaT 1 sae sonal ap
Pe] MD | 6 | osssar command Toad sana
Ps | MUTE? O |Nowsedopen
[ia | SaGK [6 eternal cock or ibende Oreste]
Ps [RO |= [Rewsed open
i [sue] |Subeede Ginput
A
PReSTaW.—[T
| 19 | CLOSE SW | | | Disc tray “close” sense switch status
| 20 { GND | Connect to GND
21 /OPEN Open Disc Tray command output
/CLOSE
ss TT
| roo
| 2] /TLoCcK | 1 | Tracking servo pull-in signal
| 26 | SRST [0] Reset signal output (for servo)
pt
a
Close Disc Tray command output
Sense signal input
ECKE
Focus servo pull-in signal
REST SW nnermost track sense switch status
/POWER
OFF
GND
0
ower off command output
a] ower supply (+ 5V)
8
t io GND
onnect to GND
O ie]
! 0) Q a
O
Par [a6]
a
onnect to GND
31
34 Main clock (4.23 MHz) input
[= [eran took oats
e@ 1C703 (AN8389SE1)
ine. | “name |!
Pi [veo [= fPowersippy
a
re] |r ever meet
TT Yitoraver ener
[= [even conneston J
= |Greund conection
= [reset np ro wes ope
[|= |avoundcomesion
|
ag
Hl
Me
lo used, open
i?)
|
Motor driver (2) input
PC2 (power cut) input
Motor driver (1) input
PC1 (power cut) input
Disctray.“open”sense.switch-status.......|.
Name
| 36
No used, open
41
ee a es Connect to GND
ir aa
| 44] iMRST | 0 | Reset signal output for MASH (IC801)
ay [0 -ieaaame |
Fo UN a
[a7 | REWOCON | T [Remsieconvorsignalinnat |
pe | GO |= |Gemedoan
40 santa fo | STANDBY LED control signal output
[3 [FPASELED [0 [PASE LED conrelsgraroupa |
[se [ve |= JPoversumeyersm |
[5s [ POWER SW |T [Poverty wich sonal rout |
54 " P126
§ §
58 P122
59 P121
P1420 | Connect to GND
61 P16
§ §
66 P11
67 P10
5 §
70 P7
Power supply terminal for FL drive
payor | lee
7) =
§
© |FL anode drive signal output
PLAY LED control signal output
Key return signal input
FL anode drive signal and key scan
signal output
FL anode drive signal-output--. -
O {FL grid drive signal output
Terminal
fwo.| "name |] —Fanevon
| 13 | = PVect = [—| Power supply (1) for driver
PGND1 fa Ground connection (1) for driver
ee Motor driver (1) reverse-action output
} 16 { Di = [0] Motor driver (1) forward-action output
| 17 {| 02 0] Motor driver (2) reverse-action output
} 18 | Dae OF Motor driver (2) forward-action output
pia] 30] Motor driver (3) reverse-action output
| 20} Da | OT Motor driver (3) forward-action output