Sony CMT-EX200 / HCD-EX200 Service Manual ▷ View online
3
HCD-EX200
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
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
care.
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
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 emission, ob-
serve from more than 30 cm away from the objective lens.
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output four times.
that the S curve waveform is output four times.
TABLE OF CONTENTS
1. SERVICING NOTE
.......................................................... 4
2. GENERAL
.......................................................................... 7
3. DISASSEMBLY
3-1. Rear Cover, Bottom Plate, Case and Eject Board ................. 9
3-2. Panel Board and Stabilizer .................................................. 10
3-3. AMP Block ......................................................................... 10
3-4. CD Block ............................................................................ 11
3-5. Motor Assy (Loading Board), CAM and SW Board .......... 11
3-6. Base Unit and Pick Up Assy ............................................... 12
3-7. Main Board (Loading Board),
REG Board and Power Board ............................................. 12
3-2. Panel Board and Stabilizer .................................................. 10
3-3. AMP Block ......................................................................... 10
3-4. CD Block ............................................................................ 11
3-5. Motor Assy (Loading Board), CAM and SW Board .......... 11
3-6. Base Unit and Pick Up Assy ............................................... 12
3-7. Main Board (Loading Board),
REG Board and Power Board ............................................. 12
4. ELECTRICAL ADJUSTMENT
................................... 13
5. DIAGRAMS
5-1. Circuit Boards Location ...................................................... 14
5-2. Block diagrams – Tuner/CD Section – ............................... 16
5-2. Block diagrams – Tuner/CD Section – ............................... 16
Block diagrams – AMP Section – ....................................... 17
5-3. Printed Wiring Board – Main Section – .............................. 18
5-4. Schematic Diagram – Main (1/3) Section – ........................ 19
5-5. Schematic Diagram – Main (2/3) Section – ........................ 20
5-6. Schematic Diagram – Main (3/3) Section – ........................ 21
5-7. Printed Wiring Board – LED/Loading/SW/AMP Section – 22
5-8. Schematic Diagram
5-4. Schematic Diagram – Main (1/3) Section – ........................ 19
5-5. Schematic Diagram – Main (2/3) Section – ........................ 20
5-6. Schematic Diagram – Main (3/3) Section – ........................ 21
5-7. Printed Wiring Board – LED/Loading/SW/AMP Section – 22
5-8. Schematic Diagram
– LED/Loading/SW/AMP Section Section – ...................... 23
5-9. Printed Wiring Board – Panel/Eject Section – .................... 24
5-10. Schematic Diagram – Panel/Eject Section – ..................... 25
5-11. Printed Wiring Board – REG Section – ............................ 26
5-12. Schematic Diagram – REG Section – .............................. 27
5-13. Printed Wiring Board – Power Section – ......................... 28
5-14. Printed Wiring Board – Power Section – ......................... 29
5-15. IC Pin Functions ............................................................... 30
5-16. IC Block Diagrams ........................................................... 33
5-10. Schematic Diagram – Panel/Eject Section – ..................... 25
5-11. Printed Wiring Board – REG Section – ............................ 26
5-12. Schematic Diagram – REG Section – .............................. 27
5-13. Printed Wiring Board – Power Section – ......................... 28
5-14. Printed Wiring Board – Power Section – ......................... 29
5-15. IC Pin Functions ............................................................... 30
5-16. IC Block Diagrams ........................................................... 33
6. EXPLODED VIEWS
6-1. Front and Case Section ....................................................... 36
6-2. Chassis Section ................................................................... 37
6-3. Mechanism Section ............................................................. 38
6-2. Chassis Section ................................................................... 37
6-3. Mechanism Section ............................................................. 38
7. ELECTRICAL PARTS LIST
.................................
39
4
HCD-EX200
SECTION 1
SERVICING NOTE
ADJUSTMENT OF CAM PHASE
Absorber
Absorber
SW lever
SW lever
Boss
Cam
Slider (3)
Screw
(BVTP2.6x8)
(BVTP2.6x8)
Screw
(PTTWH2.6x8)
(PTTWH2.6x8)
Screw
(BVTP2.6x8)
(BVTP2.6x8)
Groove of slider (3)
Hole of slider (3)
Guide (L)
Boss (Four point)
Guide (R)
Slider (2)
Lever (1)
Lever (1)
Cover, mechanical
Cam
Boss
Boss
Boss
Cam
Boss
Insert the cam so that the boss touches the SW lever
at the left shown in the figure.
at the left shown in the figure.
Rotate the cam in the arrow direction, and adjust the
phase until the boss touches the SW lever shown in
the figure.
phase until the boss touches the SW lever shown in
the figure.
With the phase adjusted, attach the parts using the following procedure.
STEP1
Insert the boss of the slider (3) in the groove of
the cam.
Insert the boss of the slider (3) in the groove of
the cam.
STEP2
Set the mecha cover to the groove
on the slider (3) and attach.
Set the mecha cover to the groove
on the slider (3) and attach.
STEP3
Insert the boss of the lever (1) in the hole of the
slider (3) and attach.
Insert the boss of the lever (1) in the hole of the
slider (3) and attach.
STEP4
While bending the slider (2) slightly in the arrow
direction, insert it in the groove of the guides (L)
and (R) and attach.
While bending the slider (2) slightly in the arrow
direction, insert it in the groove of the guides (L)
and (R) and attach.
Note : Set the slider (1) in this location
before inserting the cam.
before inserting the cam.
5
HCD-EX200
Shipment Mode
• Mode for setting the state of the unit to the state at shipment. When returning the unit to the customer after completing servicing, set to the
• Mode for setting the state of the unit to the state at shipment. When returning the unit to the customer after completing servicing, set to the
shipment mode.
Procedure :
Connect the power plug to the outlet while pressing the
Connect the power plug to the outlet while pressing the
1/u button.
Change-over of AM tuner Step between 9kHz and 10kHz.
• A step of AM channels can be changed over between 9kHz and 10kHz.
• A step of AM channels can be changed over between 9kHz and 10kHz.
Procedure:
1. Press the
1. Press the
1/u button to turn on the set ON.
2. Select the function “TUNER”, and press the TUNER/BAND button to select the BAND “AM”.
3. Press the
3. Press the
1/u button to turn on the set OFF.
4. Press the
1/u button while pressing the )+/TUNING + button, and the display of liquid crystal indicator tube changes to “AM 9k
STEP” or “AM 10k STEP”, and thus the channel step is changed over.
Switching the TAPE IN input level attenuate function ON/OFF
• The attenuate function of the line input level (TAPE IN) of this unit can be turned ON/OFF.
• The attenuate function of the line input level (TAPE IN) of this unit can be turned ON/OFF.
Procedure:
1. Press the
1. Press the
1/u button to turn ON the power.
2. Press the FUNCTION button and set the function to “TAPE”.
3. Press the
3. Press the
1/u button to turn OFF the power.
4. While pressing the
p button, press the 1/u button to turn ON the power.
5. After “POWER ON” is displayed, “ATT ON” and “ATT OFF” are displayed, and the attenuate function can be switched ON/OFF.
LCD All Lit and Key Check Mode
Procedure:
1. While pressing the FUNCTION button and
1. While pressing the FUNCTION button and
^ button, connect the power plug to the outlet.
2. When the test mode is set, the characters “STEP” are displayed on the LCD.
3. While pressing the DISPLAY button (See page 6), press the
3. While pressing the DISPLAY button (See page 6), press the
^ button. The whole LCD lights up.
4. Each time the FUNCTION button is pressed, the display switches between all lit
n partial lighting 1 n partial lighting 2 n all lit.
5. When the
p button is pressed, “KEY 0” is displayed and the key check mode is set.
6. Each time the button is pressed, the counter counts up. Buttons once pressed will not be counted when pressed again.
When all buttons have been pressed, “KEY OK” is displayed.
7. To end, press the
1/u button to turn OFF the power, and disconnect the power plug from the outlet.
Note:
Pressing buttons other than those specified in steps 4 and 5 displays modes not used in servicing. In such cases, press the
Pressing buttons other than those specified in steps 4 and 5 displays modes not used in servicing. In such cases, press the
1/u button to exit
the mode, and repeat from step 3 again.
All lit
Partial lighting 1
Partial lighting 2
6
HCD-EX200
Displaying the CD Text
• This unit is equipped with a simple CD text display function.
• This unit is equipped with a simple CD text display function.
The text is displayed only for the first 20 songs. As it will not be displayed from the 21st song, do not suspect a fault.
In some cases, special characters may not be displayed or may be substituted by other characters. This is not a fault.
In some cases, special characters may not be displayed or may be substituted by other characters. This is not a fault.
Aging Mode
• The aging mode automatically repeats the operations of the CD.
• The aging mode automatically repeats the operations of the CD.
When an error occurs:
Aging stops
When no error occurs:
Aging is performed repeatedly.
Aging stops
When no error occurs:
Aging is performed repeatedly.
Procedure:
1. Set any CD. (One with a short playback time of the final track is recommended.)
2. While pressing the FUNCTION button and the
1. Set any CD. (One with a short playback time of the final track is recommended.)
2. While pressing the FUNCTION button and the
^ button, connect the power plug to the outlet.
3. When the test mode is set, the characters “STEP” is displayed on the LCD.
4. When the
4. When the
^ button is pressed while pressing the DISPLAY button, “AGING” will be displayed, and aging is performed in the
following sequence. While aging is performed, “REP” will be displayed blinking.
5. Pressing the DISPLAY button during aging displays the cycle number (@ CY where @ is the number of agings).
6. To end aging, press the
6. To end aging, press the
1/u button, turn OFF the power, and disconnect the power plug from the outlet.
Sequence during aging
Reads the TOC
Pauses
Accesses first track
Accesses last track
Plays last track
Eject disc (“OPEN” displayed)
Load disc (“CLOSE” displayed)
Displays number of cycles
Power OFF
Power ON
DISPLAY button
DISPLAY button
Note : Press DISPLAY button
with a thing a fine point
from the bottom of front panel.
with a thing a fine point
from the bottom of front panel.