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CX-JN10
SERVICE MANUAL AEP Model
UK Model
Ver 1.1 2004.08
E Model
Australian Model
CX-JN10 is the tuner, amplifier, cassette deck
and CD player section in JAX-N10/PK10.
Model Name Using Similar Mechanism CX-JN1
CD Mechanism Type CDM74S-K6BD72
CD Base Unit Name BU-K6BD72
Section
Optical Pick-up Block Name KSM-213DCP
Optical Pick-up Name KSS-213D
Tape deck Model Name Using Similar Mechanism CX-JN1
Section Tape Transport Mechanism type CWM43FF13
SPECIFICATIONS
TUNER CASSETTE DECK Power consumption
FM tuning range 87.5 MHz to 108 MHz Track format 4 tracks, 2 channels stereo AEP, UK models: 40 W
FM usable sensitivity (IHF) Frequency response 50 Hz 8 kHz Except AEP, UK models: 74 W
AEP, UK models: 16.8 dBf Recording system AC bias Power consumption With ECO mode on: 0.25 W
Except AEP, UK models: 13.2 dBf Heads Deck A: playback x 1 in standby mode With ECO mode off: 15 W
FM antenna terminal 75 ohms (unbalanced) Deck B: recording/playback x 1, Dimensions (W x H x D) 280 x 330 x 392.5 mm
AM tuning range erase x 1 Weight
AEP, UK, E, EA, TW models: 531 kHz to 1602 kHz AEP, UK models: 6.1 kg
E51 model: 530 kHz to 1710 kHz (10 kHz step) CD PLAYER
E51 model: 6.7 kg
531 kHz to 1710 kHz (9 kHz step) Laser Semiconductor laser
E, EA, SP, TW, AUS models: 6.8 kg
SP, AUS models: 531 kHz to 1602 kHz (9 kHz step) ( = 780 nm)
530 kHz to 1710 kHz (10 kHz step) Emission duration:
continuous Specifications and external appearance are subject to change
AM usable sensitivity 350 µV/m without notice.
AM antenna Loop antenna D/A converter 1 bit dual
Signal-to-noise ratio 85 dB (1 kHz, 0 dB)
AMPLIFIER Harmonic distortion 0.05 % (1 kHz, 0 dB) COPYRIGHT
Power output Check copyright laws relevant to recordings from discs, tuner
AEP, UK models: Rated: 12 W + 12 W (6 ohms, T.H.D. GENERAL or tape for the country where the unit is to be used.
1 %, 1 kHz/DIN 45500) Power requirements
Reference: 15 W + 15 W (6 ohms, AEP, UK models: 230 V AC, 50/60 Hz
T.H.D. 10 %, 1 kHz/DIN 45324) E, E51, SP models: 110 - 120V / 220 - 240V AC · Abbreviation
MUSIC POWER: 27 W +27 W (Switchable), 50 Hz/60 Hz AUS : Australian model
Except AEP, UK models: Rated: 36 W + 36 W (1 kHz, T.H.D. 1 EA model: 120 - 127V / 220 V AC
(Switchable), 50 Hz/60 Hz
E51 : Chilean and Peruvian models
%, 6 ohms)
TW model: 120 V AC, 50 Hz/60 Hz EA : Saudi Arabia model
Reference: 45 W + 45 W (1 kHz,
T.H.D. 10 %, 6 ohms) AUS model: 240 V AC, 50 Hz/60 Hz SP : Singapore model
Total harmonic distortion 0.08 % (6 W, 1 kHz, 6 ohms, DIN TW : Taiwan model
AUDIO)
Input VIDEO/AUX: 400 mV
MIC: 1.7 mV (10k ohms)
(Except AEP, UK models)
Outputs SPEAKER: 6 ohms or more
PHONES: 32 ohms or more COMPACT DISC DECK RECEIVER
9-877-593-02 Sony Corporation
2004H05-1 Personal Audio Company
© 2004.08 Published by Sony Engineering Corporation
CX-JN10
Notes on chip component replacement
· Never reuse a disconnected chip component.
· Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
· Keep the temperature of the soldering iron around 270 °C dur-
ing repairing.
· Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
· Be careful not to apply force on the conductor when soldering
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
2
CX-JN10
TABLE OF CONTENTS
1. SERVICING NOTES ................................................ 4 7. EXPLODED VIEWS
7-1. Case Section .................................................................... 47
2. GENERAL 7-2. Tape Deck Section .......................................................... 48
Location of Controls ....................................................... 7 7-3. Panel Board Section ........................................................ 49
7-4. Key Section ..................................................................... 50
3. DISASSEMBLY 7-5. Front Cabinet Section ..................................................... 51
3-1. Disassembly Flow ........................................................... 9 7-6. Chassis Section ............................................................... 52
3-2. Case (SIDE-L/R) ............................................................. 10 7-7. CD Mechanism Deck Section-1
3-3. Case (Top) ....................................................................... 10 (CDM74S-K6BD72) ....................................................... 53
3-4. Tray Panel ........................................................................ 11 7-8. CD Mechanism Deck Section-2
3-5. CD Mechanism Deck (CDM74S-K6BD72) ................... 11 (CDM74S-K6BD72) ....................................................... 54
3-6. Front Panel Section ......................................................... 12 7-9. CD Mechanism Deck Section-3
3-7. Mechanical Deck (CWM43FF13) .................................. 12 (CDM74S-K6BD72) ....................................................... 55
3-8. Rear Cabinet Section ...................................................... 13 7-10. Base Unit Section (BU-K6BD72) .................................. 56
3-9. PT Board, MAIN Board .................................................. 13
3-10. Table Assy ....................................................................... 14 8. ELECTRICAL PARTS LIST ............................... 57
3-11. Motor (TB) Board ........................................................... 14
3-12. Motor (LD) Board ........................................................... 15
3-13. Base Unit (BU-K6BD72) ................................................ 15
· Abbreviation
3-14. Motor Gear Assy (Sled) (M701), BD Board .................. 16 · AUS : Australian model
E51 : Chilean and Peruvian models
4. TEST MODE .............................................................. 17 EA : Saudi Arabia model
SP : Singapore model
5. ELECTRICAL ADJUSTMENTS TW : Taiwan model
CD Section ...................................................................... 19
6. DIAGRAMS
6-1. Block Diagram CD Section ..................................... 20
6-2. Block Diagram TUNER/TAPE/PANEL Section ..... 21
6-3. Block Diagram AMP/POWER SUPPLY Section ... 22
6-4. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 23
6-5. Printed Wiring Board BD Section ........................... 24
6-6. Schematic Diagram BD Section .............................. 25
6-7. Printed Wiring Boards CHANGER Section ............ 26
6-8. Schematic Diagram CHANGER Section ................ 27
6-9. Schematic Diagram MAIN Section (1/4) ................ 28
6-10. Schematic Diagram MAIN Section (2/4) ................ 29
6-11. Schematic Diagram MAIN Section (3/4) ................ 30
6-12. Schematic Diagram MAIN Section (4/4) ................ 31
6-13. Printed Wiring Board MAIN Section ...................... 32
6-14. Printed Wiring Board HP Section ........................... 33
6-15. Schematic Diagram HP Section .............................. 33
6-16. Printed Wiring Board PANEL Section .................... 34
6-17. Schematic Diagram PANEL Section ....................... 35
6-18. Printed Wiring Boards KEY Section ....................... 36
6-19. Schematic Diagram KEY Section ........................... 37
6-20. Printed Wiring Board PT Section
(AEP, UK, AUS) .............................................................. 38
6-21. Schematic Diagram PT Section
(AEP, UK, AUS) .............................................................. 39
6-22. Printed Wiring Board PT Section
(E, EA, E51, SP, TW) ..................................................... 40
6-23. Schematic Diagram PT Section
(E, EA, E51, SP, TW) ..................................................... 41
3
CX-JN10
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP · MODEL IDENTIFICATION
BLOCK OR BASE UNIT Back Panel
The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with PART No.
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERA TION
CHECK
Carry out the "S curve check" in "CD section adjustment" and
check that the S curve waveforms is output three times. MODEL PART No.
AEP and UK models No model number label
UNLEADED SOLDER Taiwan model 4-248-949-2[]
Boards requiring use of unleaded solder are printed with the lead- Singapore model 4-249-031-6[]
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with Australian model 4-249-128-2[]
the lead free mark due to their particular size) Saudi Arabia model 4-249-129-6[]
E model 4-249-130-8[]
: LEAD FREE MARK Chilean and Peruvian models 4-249-802-3[]
Unleaded solder has the following characteristics.
· Unleaded solder melts at a temperature about 40 °C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
· Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges oc-
cur such as on IC pins, etc.
· Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure :
While pressing the x key, press the OPEN/CLOSE Z key for 5
seconds. The message "UNLOCKED" is displayed and the tray is
unlocked.
Note: When "LOCKED" is displayed, the tray lock is not released by
turning power on/off with the [POWER] key.
4
CX-JN10
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF.
1 Remove the case (side-L).
2 Turn the loading gear in the direction of arrow A.
A
3 Pull-out the disc tray.
5
CX-JN10
SERVICE POSITION
CD mechanism deck
main board (CN691)
Connect wire (flat type) (19 core) to
main board (CN691) and BD board (CN710).
BD board (CN710)
Tape mechanism deck
panel board (CN601)
main board (CN302)
Connect wire (flat type) (13 core) to main board (CN301)
panel board (CN601) and mechanical deck.
6
CX-JN10
SECTION 2
GENERAL This section is extracted from
instruction manual.
· LOCATION OF CONTROLS
Main unit: front 5 MULTI JOG ! Remote sensor
When used in combination with ENTER and MULTI Receives a signal from the remote.
Refer to the pages indicated in parentheses for details.
JOG,
@ VOLUME
CD: selects a track and Repeat/Shuffle/Programmed
Adjusts the volume.
playback.
Tuner: selects a preset station. # TREBLE
Tape: specifies tape length. Enhances high frequency sound.
Clock and Timer: sets the time.
ECO and Dimmer: selects the mode. $ BASS
Emphasizes low frequency sound.
6 PHONES jack
Plug in here an optional headphones set with a mini % i-Bass
stereo plug (ø3.5 mm). Speaker output is canceled. Produces rich and clear low frequency sound.
7 SYNC DUB ^ PTY (AEP, UK models)
Starts dubbing a whole tape. Displays a program type for RDS (Radio Data System)
wREC/REC MUTING RT (AEP, UK models)
Starts recording. Displays text information for RDS (Radio Data System)
8 DISC DIRECT PLAY 1-3 & cPLAY/PRESET
Selects a disc. When the unit is turned off: activates or deactivates
1 DISC CHANGE DEMO.
Rotates the CD trays. 9 zOPEN/CLOSE CD and Tape: starts playback.
Opens or closes the disc compartment. Tuner: tunes into a preset station.
2 POWER 6STANDBY/ON
Switches the unit on and off (standby). 0 TAPE A/B sSTOP/CLEAR
The red indicator flashes when receiving a signal from Selects Tape function, and deck A or B. CD and Tape: stops playback.
the remote. TUNER/BAND Tuner: clears a station preset.
3 MODE Selects Tuner function and the radio band. fTUNING DOWN, gTUNING UP
Selects various modes (ECO and Repeat/Shuffle/ VIDEO/AUX CD: searches a track in fast forward or fast reverse
Programmed playback, etc.) when used in combination Selects the function of external equipment connected playback when held down.
with ENTER and MULTI JOG. to VIDEO/AUX jacks. Tape: fast forwards or rewinds the tape.
Tuner: manually tunes down or up within the band.
4 ENTER CD
Fixes the modes and the time (ECO, Repeat/Shuffle/ aPAUSE/SET
Selects CD function.
Programmed playback, clock, and timer, etc.) when CD and Tape: pauses playback.
used in combination with ENTER and MULTI JOG. Tuner: stores the received station in to preset.
* MIC MIXING (Except AEP, UK models)
Adjusts the microphone volume.
MIC jack (Except AEP, UK models)
Connects the microphone here.
Main unit: rear 1 AM LOOP, FM 75 terminals
Plug in the supplied AM and FM antennas here.
Refer to the pages indicated in parentheses for details.
2 VIDEO/AUX jacks
Accepts analog sound signals from external equipment.
Connect using an optional connecting cable with RCA
phono plugs (red plug to R jack, white plug to L jack).
Refer also to the operating instructions of your equipment.
To switch function to external input, press VIDEO/AUX.
Tip:
To change the displayed name for this function, turn the
unit on, then hold down VIDEO/AUX and press POWER
on the unit. Repeat the procedure to select "VIDEO",
"AUX" or "TV".
3 # SPEAKER terminals
Connect the speaker cord of the supplied front speakers
here.
4 AC voltage selector (E, Saudi Arabia,
Chilean, Peruvian, Singapore models)
Switches AC voltage between 110 - 120V and 220 - 240V.
(E, Chilean, Peruvian, Singapore models)
Switches AC voltage between 110 - 127V and 220 - 240V.
(Saudi Arabia model)
Make sure it matches your local voltage.
5 AC power cord
7
CX-JN10
Remote control TAPE A/B 9 DISC SKIP
Select a disc.
Refer to the pages indicated in parentheses for details. TUNER MODE
Switches between stereo or monaural FM reception. 0 c/d
When the unit is turned off: activates or deactivates
3 r, t
DEMO.
CD: selects a track. CD and Tape: starts playback.
Tuner: selects a preset station.
Tape: specifies tape length. s
BASS and TREBLE: adjusts the level. CD and Tape: stops playback.
Clock and Timer: sets the time.
f,g
4 PLAY MODE CD: searches a track in fast forward or fast reverse
Selects Shuffle or Programmed playback in CD playback when held down.
function. Tape: fast forwards or rewinds the tape.
Tuner: manually tunes down or up within the band.
REPEAT
Enters CD repeat playback mode. a
CD and Tape: pauses playback.
ENTER
! SLEEP
Buttons with the same or similar names with the main 5 CLOCK/TIMER/SET
Switches the sleep-timer on/off and selects the
unit basically have the same function. Enters timer setting mode. duration.
1 POWER CLOCK/TIMER/SELECT @ VOLUME (+, -)
Selects timer playback, timer recording or timer off. Adjusts the volume.
2 1-0/10, +10
CD: selects a CD track of the specified number. 6 DISPLAY # SOUND
Tuner: tunes in to the station with the specified preset Displays the time and the remaining time for CD. Selects BASS or TREBLE setting mode
number. 7 SHIFT CLEAR
The numbered buttons take on these functions below when Hold down when pressing a numbered button to change Clears a track of the CD programmed playback and a
pressed with SHIFT held down: its function to that printed above the number. Radio preset station.
e.g.)
EDIT "Press SHIFT+BAND on the remote" indicates "Hold
Enters AI Edit Recording or Programmed Edit Recording down SHIFT and press '2' (BAND)". Doing so makes Note
mode when pressed in stop mode. you be able to select Tuner function and the radio band. The buttons not explained above (ALBUM N, M,
You can first press SHIFT, then a numbered button. SPECTRUM and KARAOKE) do not operate for this
BAND
8 FUNCTION unit.
Selects Tuner function and the radio band.
Switches the active function among CD, TAPE, TUNER
and VIDEO (AUX or TV).
To display the time
Setting the clock Press DISPLAY on the remote. The time will be displayed for
Use the remote. 6 seconds.
1 Press CLOCK/TIMER/SET. Tip: (Except AEP, UK models)
Go to step 3 when the time appears and the 'hour' flashes. "AM 12:00" indicates midnight and "PM 12:00" noon.
2 Press r or t repeatedly until "CLOCK If "- -:- -" appears when the unit is turned off
SET" appears in the display and then press There has been a power interruption. Re-set the clock.
ENTER.
3 Press r or t repeatedly to set the hour
and then press ENTER.
4 Press r or t repeatedly to set the minute
and then press ENTER.
The time display stops flashing and the clock starts from
00 seconds.
·MULTI JOG is also available in place of r or t.
8
CX-JN10
SECTION 3
DISASSEMBLY
· This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
Note 1: The process described in can be performed in any order.
Note 2: Without completing the process described in , the next process can not be performed.
SET
3-2. CASE
(SIDE-L/R)
(Page 10)
3-3. CASE (TOP) 3-4. TRAY PANEL
(Page 10) (Page 11)
3-5. CD MECHANISM DECK
(CDM74S-K6BD72)
(Page 11)
3-6. FRONT PANEL 3-8. REAR CABINET 3-10. TABLE ASSY 3-13. BASE UNIT
SECTION SECTION (Page 14) (BU-K6BD72)
(Page 12) (Page 13) (Page 15)
3-7. MECHANICAL 3-9. PT BOARD, 3-11. MOTOR (TB) 3-14. MOTOR GEAR ASSY (SLED) (M701),
DECK MAIN BOARD BOARD BD BOARD
(CWM43FF13) (Page 13) (Page 14) (Page 16)
(Page 12)
3-12. MOTOR (LD)
BOARD
(Page 15)
9
CX-JN10
Note: Follow the disassembly procedure in the numerical order given.
3-2. CASE (SIDE-L/R)
5 case (side-L) 2 two screws
(BVTP3 × 10)
1 two case screws
2 two screws
(BVTP3 × 10)
3
4
1 two case screws
1 case screw
3
4
5 case (side-R)
1 case screw
3-3. CASE (TOP)
1 two screws
(BVTP3 × 10)
2 claw
4 case (top)
3
2 claw
2 claw
2 claw
10
CX-JN10
3-4. TRAY PANEL
1 Turn the loading gear
in the direction of arrow A.
A
2 Pull-out the disc table.
3 four claws
4 tray panel
3-5. CD MECHANISM DECK (CDM74S-K6BD72)
5 CD mechanism deck
(CDM74S-K6BD72)
1 wire (flat type) (19 core)
(CN691)
2 connector
(CN701)
3 screw
(BVTP3 × 10) 4 two screws
(BVTP3 × 10)
3 screw
(BVTP3 × 10)
11
CX-JN10
3-6. FRONT PANEL SECTION
1 screw
(BVTP3 × 10)
3 screw 2 terminal
(BVWHTP)
4 HP board
8 connector
(CN101)
5 wire (flat type) (11 core)
(CN694)
6 connector
(CN302)
6 connector
(CN301)
9 front panel section
7 three screws
(BVTP3 × 10)
3-7. MECHANICAL DECK (CWM43FF13)
4 mechanical deck
3 clamp
(CWM43FF13)
2 six screws
(BVTP3 × 10)
5 ground mechanical plate
1 wire (flat type) (13 core)
12
CX-JN10
3-8. REAR CABINET SECTION
3 rear cabinet section
1 wire (flat type)
(11 core: EXCEPT AEP, UK) (CN801)
(15 core: AEP, UK) (CN802)
2 three screws
(BVTP3 × 10)
2 screw
(BVTP3 × 10)
3-9. PT BOARD, MAIN BOARD
· Abbreviation
E51 : Chilean and peruvian models SP : Singapore model
EA : Saudi Arabia model TW : Taiwan model
(EXCEPT E, EA, E51, SP, TW) (E, EA, E51, SP, TW) 7 two screws
6 screw 5 screw
8 two screws
(BVTP3 × 10) (BV B3) 7 two screws
8 two screws
4 screw
(BVTT3 × 8) A
A 4 screw
5 clamp (BVTT3 × 8)
8 PT board
9 PT board A 6 Remove the PWB PT HLDR
in the direction of the arrow.
3 connector
7 Remove the PWB PT HLDR (CN090) (E, EA, E51, SP, TW)
in the direction of the arrow. (CN091) (EXCEPT E, EA, E51, SP, TW)
1 screw (BV B3)
1 two screws
(BV B3) 2 MAIN board
13
CX-JN10
3-10. TABLE ASSY
5 two claws
A
4 hook
3 wire (flat type) (5 core)
(CN702)
2 Pull-out the table assy. 1 Turn the loading gear
6 table assy in the direction of arrow A.
3-11. MOTOR (TB) BOARD
1 screw
(PTPWH M2.6)
2 table (loading)
3 belt (table)
6 MOTOR (TB) board
4 connector
(CN731)
5 two screws
(BTTP M2.6)
14
CX-JN10
3-12. MOTOR (LD) BOARD
3 two screws
(BTTP M2.6)
4 MOTOR (LD) board
2 connector
(CN704)
1 belt (loading)
3-13. BASE UNIT (BU-K6BD72)
9 base unit
6 (BU-K6BD72)
7 three insulators
8 insulator
3 three coil springs
(insulator)
5 coil spring
2 three stoppers (BU) (insulator)
1 three screws 4 screw
(BTTP M2.6) (PTPWH M2.6)
15
CX-JN10
3-14. MOTOR GEAR ASSY (SLED) (M701), BD BOARD
7 gear (A)
6 claw
2 two screws 8 gear (B)
(P2 × 3)
5 wire (flat type) (16 core)
(CN708)
qa BD board
0 motor gear assy (SLED)
(M701)
1 Remove two
solders.
4 3 screw (BTP2.6 × 8)
9 Remove two solders.
16
CX-JN10
SECTION 4
TEST MODE
MC COLD RESET CHANGE-OVER OF AM TUNER STEP BETWEEN
· The cold reset clears all data including preset data stored in the 9 kHz AND 10 kHz (Except AEP and UK models)
RAM to initial conditions. Execute this mode when returning · A step of AM channels can be changed over between 9 kHz and
the set to the customer. 10 kHz.
Procedure: Procedure:
1. In the standby status, while pressing the x button, press the 1. Press the [POWER] button to turn the power on.
[POWER] button. 2. While pressing the [TUNER] button, press the [POWER] but-
2. The set is reset, then becomes standby status. ton to the display on fluorescent indicator tube changes to "AM
530 kHz" (10 kHz step) or "AM 531 kHz" (9 kHz step), and
GC TEST MODE thus the channel step is changed over.
Procedure:
1. Press the [POWER] button to turn the power on. FUNCTION CHANGE MODE
2. While pressing the x button, press the [POWER] button for · Select either TV, VIDEO or AUX (MD) of the external function
5 seconds. input.
3. It change displays in order of model type, version and suffix at Procedure:
2 seconds interval, then the display is back to normal status. 1. Press the [POWER] button to turn the power on.
2. While pressing the [VIDEO/AUX] button, press the [POWER]
AMP TEST MODE button.
Procedure: 3. Each time this operation is operated, it change displays in or-
1. In the status where AC plug is disconnected, while pressing der of "TV", "VIDEO" and "AUX".
the [VIDEO/AUX] button, connect the AC plug to turn the
power on. Then enter the AMP test mode and display "AMP
TEST".
2. If turn the [VOLUME] knob clockwise, it displays "VOLUME
MAX", and if turn the knob counterclockwise, it displays
"VOLUME 0".
3. If the [TREBLE] and [BASS] knobs are turned clockwise or
counterclockwise, it change displays in order of "EQ MAX",
"EQ MIN" and "EQ FLAT".
4. To release from this mode, disconnect the AC plug and turn
the power off.
DISC TRAY LOCK
Procedure:
1. Press the [POWER] button to turn the power on.
2. While pressing the x button, press the OPEN/CLOSE Z
button for 5 seconds.
3. The message "LOCKED" is displayed and the tray is locked.
(Even if exiting from this mode, the tray is still locked)
4. To release this lock, while pressing the x button, press
the OPEN/CLOSE Z button for 5 again.
5. The message "UNLOCKED" is displayed and the tray is un-
locked.
CD REPEAT 5 LIMIT CANCEL MODE
· Number of repeat for CD playback is 5 times when the repeat
mode is "REPEAT". This mode enables CD to repeat playback
for limitless times.
Procedure:
1. Press the [POWER] button to turn the power on.
2. In the repeat on status, while pressing the x button, press the
[CD] button to enter the CD repeat 5 limit cancel mode and
repeat mark blinks on the fluorescent indicator tube.
3. To release this mode, press the [POWER] button to turn the
power off.
17
CX-JN10
CD TEST MODE
· This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pickup.
Procedure:
1. In the status where AC plug is disconnected, while pressing
the [CD] button, connect the AC plug to turn the power on.
2. When enter this mode, it displays "CD TEST" and few sec-
onds later, all segments turn on of the fluorescent indicator
tube.
3. To release from this mode, disconnect the AC plug and turn
the power off.
In this mode, it operates as following table.
Button Operation Purpose of use
M Move the pick-up to outside track Sled circuit check
m Move the pick-up to inside track Tracking circuit check
Mechanism operation check
Optical pick-up check
N Playback a CD Servo block check
If it cannot focus on, it continuous focus search
x When playback a CD: stop playback APC circuit check
When stop a CD: Laser current measure
display "READING" (blink) Focus search waveform check
continuous laser diode on Tracking balance check
continuous focus search (not made focus on)
X Pause, Tracking servo off
(ignore CLV error)
18
CX-JN10
SECTION 5
ELECTRICAL ADJUSTMENTS
Note: Clear RF signal waveform means that the shape " " can be clearly
CD SECTION distinguished at the center of the waveform.
Note:
1. CD Block is basically designed to operate without adjustment. Therefore, RF signal waveform
check each item in order given. VOLT/DIV : 200mV
2. Use YEDS-18 (3-702-101-01) unless otherwise indicated. TIME/DIV : 500ns
3. Use an oscilloscope with more than 10M impedance.
4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
level : 1.3 ±0.3Vp-p
S-CURVE CHECK
Oscilloscope
BD board
Connecting Location: BD board
TP(FE)
TP(VC)
BD Board (Conductor side)
Procedure :
1. Connect an oscilloscope to TP (FE) and TP (VC).
2. Turn the power on.
3. Load a disc (YEDS-18) and actuate the focus search. (In
consequence of open and close the disc tray, actuate the focus
search)
4. Confirm that the oscilloscope waveform (S-curve) is
symmetrical between A and B. And confirm peak to peak level
within 3 ± 0.5 Vp-p.
S-curve waveform
symmetry
A
within 3 ±0.5Vp-p TP (VC)
B TP (RF)
TP (FE)
Note: · Try to measure several times to make sure than the ratio
of A : B or B : A is more than 10 : 7. IC721
· Take sweep time as long as possible and light up the
brightness to obtain best waveform.
RF LEVEL CHECK
oscilloscope
BD board
TP(RF)
TP(VC)
Procedure :
1. Connect an oscilloscope to TP (RF) and TP (VC).
2. Turn the power on.
3. Load a disc (YEDS-18) and playback.
4. Confirm that oscilloscope waveform is clear and check if RF
signal level is correct or not.
19 19
CX-JN10
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM CD Section
OPTICAL PICK-UP
BLOCK CD DSP
(KSM-213DCP) IC721
A FIN2
8
LCHO CD
DETECTOR EQ, RF EFMIN D/A
42 A (Page 22)
RF AMP 4 3 ERROR
AGC CORRECT CONVERTER RCHO
A D 45 R-CH
D FIN1
7
· R-ch is omitted due to same as L-ch.
I-V AMP
C
ASDFIN
· SIGNAL PATH
B C 57
B ASDACK
EXTERNAL
56 : CD PLAY
AUDIO IN ASLRCK
55
DATA
60
DATACK
SERIAL OUT 59
PH, BH LRSY
58
E E
TIN1 EFLG
9
53
A/D C2F
F TBAL 52
F CONVERTER FSX/16MIN
TIN2
10 50
LASER DIODE SERVO
PROCESSOR