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Ver. 2
Please refer to the
MODIFICATION NOTICE.
SERVICE MANUAL
MODEL JP E3 E2 EK E2A E2C E1K EUT
DN-S1200
CD/USB MEDIA PLAYER & CONTROLLER
For purposes of improvement, specifications and
design are subject to change without notice.
Please use this service manual with referring to the
operating instructions without fail.
Some illustrations using in this service manual are
slightly different from the actual set.
PROFESSIONAL BUSINESS COMPANY
X0379 V.02 DE/CDM 0902
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the unit is defective.
CAUTION Please heed the points listed below during servicing and inspection.
Heed the cautions! Inspect for safety after servicing!
Spots requiring particular attention when servicing, such Check that all screws, parts and wires removed or discon-
as the cabinet, parts, chassis, etc., have cautions indicated nected for servicing have been put back in their original po-
on labels or seals. Be sure to heed these cautions and the sitions, inspect that no parts around the area that has been
cautions indicated in the handling instructions. serviced have been negatively affected, conduct an insu-
lation check on the external metal connectors and between
Caution concerning electric shock! the blades of the power plug, and otherwise check that
safety is ensured.
(1) An AC voltage is impressed on this set, so touching in-
ternal metal parts when the set is energized could
(Insulation check procedure)
cause electric shock. Take care to avoid electric shock,
Unplug the power cord from the power outlet, disconnect
by for example using an isolating transformer and
the antenna, plugs, etc., and turn the power switch on. Us-
gloves when servicing while the set is energized, un-
ing a 500V insulation resistance tester, check that the in-
plugging the power cord when replacing parts, etc.
sulation resistance between the terminals of the power
(2)There are high voltage parts inside. Handle with extra plug and the externally exposed metal parts (antenna ter-
care when the set is energized. minal, headphones terminal, microphone terminal, input
terminal, etc.) is 1M or greater. If it is less, the set must
Caution concerning disassembly and be inspected and repaired.
assembly!
Though great care is taken when manufacturing parts from
sheet metal, there may in some rare cases be burrs on the
CAUTION Concerning important safety
edges of parts which could cause injury if fingers are
moved across them. Use gloves to protect your hands.
parts
Only use designated parts! Many of the electric and structural parts used in the set
have special safety properties. In most cases these prop-
The set's parts have specific safety properties (fire resis- erties are difficult to distinguish by sight, and using re-
tance, voltage resistance, etc.). For replacement parts, be placement parts with higher ratings (rated power and
sure to use parts which have the same properties. In par- withstand voltage) does not necessarily guarantee that
ticular, for the important safety parts that are marked z on safety performance will be preserved. Parts with safety
wiring diagrams and parts lists, be sure to use the desig- properties are indicated as shown below on the wiring dia-
nated parts. grams and parts lists is this service manual. Be sure to re-
place them with parts with the designated part number.
Be sure to mount parts and arrange
the wires as they were originally! (1) Schematic diagrams ... Indicated by the z mark.
For safety reasons, some parts use tape, tubes or other in- (2) Parts lists ... Indicated by the z mark.
sulating materials, and some parts are mounted away from
Using parts other than the designated
the surface of printed circuit boards. Care is also taken with
parts could result in electric shock, fires or
the positions of the wires inside and clamps are used to
other dangerous situations.
keep wires away from heating and high voltage parts, so
be sure to set everything back as it was originally.
2
DN-S1200
z
z
z
3
DN-S1200
DIMENSION
4
DN-S1200
DISASSEMBLY
(Follow the procedure below in reverse order when reassembling.)
Note : Do not fail to pull AC cord from wall outlet before dis-
connect the FFC cable and wire.
If AC cord is remained plugged into wall outlet, power
is kept supplied in the unit, which may cause damage.
1. TOP CASE Unit
(1) Remove the 3 screws on the each L/R side.
(2) Remove 2 screws on the rear side.
(3) Pull up the TOP CASE UNIT and then pull out the 27P
FFC cable and 4P wire cable.
SCREWS TOP CASE Assembly
SCREWS
4P wire cable
SCREWS
27P FFC cable
Rear side
BOTTOM CASE UNIT
Note : Do not fail to pull AC cord from wall outlet before dis-
connect the FFC cable and wire.
5
DN-S1200
2. MAIN PWB UNIT
(1) Remove the 7P KR wire, 22P FFC cable and 14P FFC
cable on the MAIN PWB UNIT of front side.
(2) Remove the 11P FFC Cable on the Right side of MAIN
PWB UNIT.
(3) Remove the 2 screws on the MAIN PWB UNIT and 2
screws on the rear side.
(4) Pull up the MAIN PWB UNIT and moved the MAIN
PWB UNIT.
7P KR wire
7P KR wire
SCREWS
22P FFC cable
SCREWS
11P FFC cable 22P FFC cable
11P FFC cable
14P FFC cable
14P FFC cable
MAIN PWB UNIT
MAIN PWB UNIT
SCREWS
Rear side
SCREWS
Rear side
Note : Do not fail to pull AC cord from wall outlet before dis-
connect the FFC cable and wire.
6
DN-S1200
3. CD MECHA UNIT
(1) Remove the 2 screws on the front side and the 2
screws on the bottom side.
CD MECHA UNIT
(2) Pull up the CD MECHA UNIT and Remove the CD
MECHA UNIT.
CD MECHA. UNIT
Rear Side
BOTTOM CHASSIS
SCREWS
SCREWS
7
DN-S1200
4. POWER PWB UNIT
(1) Remove the 2 screws on the rear side and remove the
screw on the left side.
(2) Pull up the CORD BUSH with AC CORD.
(3) Pull the AC INPUT PWB Unit to the direction of arrow
and remove the AC INPUT PWB Unit and AC CORD.
CORD BUSH
AC INPUT UNIT
SCREW
Rear Side
SCREW
BOTTOM CHASSIS
8
DN-S1200
(4) Remove the 5 screws on the POWER PWB Unit.
(5) Remove the 3 screws on the rear side.
(6) Pull up the POWER PWB Unit and remove the POW-
ER PWB Unit.
SCREWS
POWER PWB UNIT
Rear Side
SCREWS
BOTTOM CASE
9
DN-S1200
5. PANEL PWB UNIT
(1) Pull up the PARAMETER KNOB and FADER KNOB
from TOP CASE UNIT.
FADER KNOB TOP CASE UNIT
PARAMETER KNOB
(2) Turn over the TOP CASE UNIT. TOP CASE UNIT
(3) Remove the 7 screws on the CHASSIS COVER and
then pull out the CHASSIS COVER.
SCREWS
SCREWS
SHASSIS COVER
Rear side
TOP CASE UNIT
10
DN-S1200
(4) Remove the screw on the SENSOR UNIT and then re-
move the SENSOR UNIT.
(5) Remove the screw on the SPACER GND and then re-
move the SPACER GND.
(6) Remove the 2 screws on the rear side and 2 screws
on the FRONT SUB PANEL.
(7) Pull up the FRONT SUB PANEL and remove the
FRONT SUB PANEL.
SENSOR UNIT
SCREWS
SCREW
FRONT SUB PANEL
SPACER GND
SCREWS
Rear Side TOP CASE UNIT
11
DN-S1200
(8) Remove the 15 screws on the PANEL PWB UNIT.
And then remove the PANL PWB UNIT.
SCREWS
SCREWS
SCREWS
PANEL PWB UNIT
TOP CASE UNIT
12
DN-S1200
SERVICE MODE
1. Turning on the power in the service mode
(1) Turn on the power while pressing the PARAMETERS knob and the button simultaneously.
The following appears on the VFD segment display section:
- - S e r v i c e - - - - - S e r v i c e - - -
F u n c t i o n C H K F u n c t i o n C H K
(2) When the PARAMETERS knob is turned clockwise, the display on the lower tier of the VFD segment display section switches
in the following order: "Function CHK" "CD Drive CHK" "SW Check" "Panel CHK" "Touch MEAS".
The display switches in the opposite order when the PARAMETERS knob is turned counterclockwise.
(3) The displayed mode can be selected by pressing the PARAMETERS knob.
2. Function summary
(1) Checking the operations of the functions (Function CHK)
Setting initialization (S1200 init)
D-Link operation check (D-Link Check)
Audio signal output (Audio Out)
Audio mute check (Mute Check)
Touch initialization (Touch Init.)
USB-MIDI command transmission (USB-MIDI)
USB device operation check (USB Test)
PS/2 operation check (PS/2 Check)
Sub microprocessor version up (Sub CPU Ver. UP)
(2) Checking the operations of the CD drive (CD Drive CHK)
Disk type distinction display (Disc Type)
Servo data display (Servo Data)
Error rate display (Error Rate)
Pickup movement (PU Clean)
Remove the disc (Loader Clean)
Error code display (Err Code CHK)
Total running time display (Total Time)
Heat Run mode1 (H/R1)
Heat Run mode2 (H/R2)
(3) Checking the operations of the switches (SW Check)
(4) Checking the operations of the panel (Panel CHK)
PARAMETERS knob
JOG disc
Pitch FADER
FADER IN
The functions shown below are always available while in the panel check mode.
All LEDs lit, All VFD segments Lit/LED DIM, All VFD segments off/All LEDs off, All VFD segments off
(5) Touch measurement (Touch MEAS)
Measurement of the count value when the touch sensor section is not being touched, and measurement and judgment of the
amount of change of the count value when the touch sensor section is being touched.
13
DN-S1200
3. Checking the operations of the functions (Function CHK)
(1) Turn the PARAMETERS knob to select "Function CHK" from the service mode's top menu, then press the PARAMETERS knob
to set the function check mode. The following appears on the VFD segment display section:
F u n c t i o n C H K F u n c t i o n C H K
S 1 2 0 0 i n i t S 1 2 0 0 i n i t
(2) When the PARAMETERS knob is turned clockwise, the display on the lower tier of the VFD segment display section switches
in the following order: "S1200 init" "D-Link Check" "Audio Out" "Mute Check" "Touch Init." "USB-MIDI" "USB
Test" "PS/2 Check" "SubCPU VerUP".
The display switches in the opposite order when the PARAMETERS knob is turned counterclockwise.
(3) The displayed mode can be executed by pressing the PARAMETERS knob.
(4) Press the button to return to the top level of the service mode.
3.1. Setting initialization (1200 init)