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DP-7020
CONTENTS
CONTROLS AND INDICATORS ...........cccscesrerceeene 3
DISASSEMBLY FOR REPAIR
1. How to remove operation/mechanism
2. Removing the tray ...........
3. Installing the tray ............
3. Removing the pickup (Japan made) ....
3. Removing the pickup (singapore made) .
BLOCK DIAGRAM .........::ccccssssseccssserenstseseesessesensersees
CIRCUIT DESCRIPTION
1. Description of components
. Display unit and y-com unit .
. Set mode flowchart ..
Test mode
Microprocessor .PD75216ACW-295
(X25-3820-00
IC) oes
sceeeescenensseeseeseneeee 21
6. RF AMP CXA1081S
(X32-1500-11 : 10104)...
7. Servo control CXA1244S
a PWN
(X32-1500-11 : 10103)... esescstseseeeeeeeeseens 25
8. Digital signal processor LS] CXD11650
(X3B2-1500-11 5 1011) oc sessessssssscssserstenessensenes 28
DP-7020
JAPAN MADE
CONTROL UNIT*
X32-1510-11 {K, P)
X32-1510-21 (U, UE, M)
X32-1542-71 (x)
X92-1370-02
MECHANISM ASS'Y
X92-1400-02
9. 18bit serial input D/A converter PCM1701
(X32-1500-11 : ICG, 7) ....scsesserssseressscerreetsesees 31
10. 8x over-sampling digital filter SM5818AP
(X3B2-1500-11 : ICQ)... -essscesceesersesssneeseeneeesens
11. D.P.A.C IC KAGO1 (X32-1500-11 : 1C13)
MECHANISM OPERATION DESCRIPTION
1. Tray OPEN/CLOSE operation
2. Pickup chassis UP/DOWN
movement
3. Gear installing position .
ADJUSTMENT ...........
VOLTAGE TABLE
PC BOARD (COMPONENT SIDE VIEW) .........
PC BOARD (FOIL SIDE VIEW) .........
SCHEMATIC DIAGRAM
EXPLODED VIEW (MECHANISM)
+ JAPAN MADE...
cc seessssetcesseessesereeseeseesaneeees 68
EXPLODED VIEW (MECHANISM)
: SINGAPORE MADE
EXPLODED VIEW (UNIT)
PARTS LIST...
sey
SPECIFICATIONS...
BREBRSASK
SINGAPORE MADE
X32-1562-71 (T, E)
X32-1560-10 (K)
{CDM-14)
(CDM-14SA)
Caution:
The mechanism ass'y used with the DP-7020 varies in two
types depending on the manufacturing location. (Japan, Sin-
gapore)
Before Operation
© Transportation screw
Before operation, remove the red-headed screw attached
to the bottom of the unit used during transportation from
the factory. Remove the screw using a coin or screwdriver,
etc.
e
After removing, retain the screw together with the
Warranty card and other documents.
e@ When the unit is to be transported again, be sure to
replace the screw to its original position.
1. Turn ON the power switch when no disc 1s loaded.
2. Wait a few seconds until the disc OUT indicator comes
"ON". Then turn "OFF" the power.
cared
(aBe7]
3. Firmly tighten the transportation screw.
DP-7020
CONTROLS AND INDICATORS
Program check
Play mode indicators
TRACK mode
ke |
PROGRAM
mode
Track number
TIME mode
indicator
(TRACK NO.)
DISC indicator
(DISC)
REPEAT indicator
|) CCRS
indicator {P.C.}
(REPEAT)
CCRS
indicator —
Index number indicator (INDEX)
Program number indicator (P NO.)
REMOTE
SENSOR
window
OUTPUT
LEVEL control
Disc tray
Time counter
SINGLE TIME
TOTAL TIME
EMPHASIS
indicator
(EMPHASIS)
RANDOM
indicator
(RANDOM)
SINGLE TIME
TOTAL TIME
EMPHASIS
SPACE
éoir_)
SPACE indicator
(SPACE)
EDIT indicator
(EDIT)
Numeric keys [1] ~
[20/0] (+10
For designating
times and track numbers.
splay
anating
The indicators of all of the
DISPLAY
OFF
key
ney form the music calen-
REPEAT
key
ay TS eBeo ew
PHONES
jack
Search keys [<<)
>>
PLAY/PAUSE
key
[>
tion.
POWER
switch
or previous tracks.
Used to fast-forward or fast-
reverse the disc playing posi-
Skip keys [W<) [>>]
Used to skip to successive
Used
to switch alternately
between
CD play mode
and pause
mode.
LL
Play/pause
indicator (>)
OPEN/CLOSE key [&] \-_-._
STOP key
Used to open and close the
disc tray.
DISPLAY
OFF key
If the DISPLAY OFF key is pressed during disc play. the
display is extinguished.
© If the DISPLAY OFF key is pressed at any time other
than during disc play, the display will not be extin-
guished.
@ When an operation key is pressed (excluding adjust-
ment
of the OUTPUT
LEVEL
control)
while
the
display is in the DISPLAY
OFF state. the display
appears for a few seconds.
@ When
the display
is in the DISPLAY
OFF
state
during program
play. the display appears
for ap-
proximately
2 seconds
at the beginning
of each
tune.
The DISPLAY OFF state is canceled when the DISPLAY
OFF
key
is
pressed
again
or
when
the
OPEN/
CLOSE key [A] or STOP key [Mii] is pressed.
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