Sony MZ-E505 User Manual
MZ-E505
SERVICE MANUAL
Ver 1.0 2002. 02
US and foreign patents licensed from Dolby
Laboratories.
SPECIFICATIONS
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: λ = 790 nm
Emission duration: continuous
Laser output: less than 44.6 µW*
* This output is the value measured at a distance
of 200 mm from the objective lens surface on
the optical pick-up block with 7 mm aperture.
Revolutions
Approx. 300 rpm to 2,700 rpm
Error correction
ACIRC (Advanced Cross Interleave Reed
Solomon Code)
Sampling frequency
44.1 kHz
Coding
ATRAC (Adaptive TRansform Acoustic Coding)
ATRAC3: LP2/LP4
Modulation system
EFM (Eight to Fourteen Modulation)
Number of channels
2 stereo channels
1 monaural channel
Frequency response
20 to 20,000 Hz ± 3 dB
Wow and Flutter
Below measurable limits
Outputs
Headphones/earphones: stereo mini-jack,
maximum output level
5 mW + 5 mW load impedance 16 Ω
E Model
Model Name Using Similar Mechanism NEW
Mechanism Type MT-MZE505-176
Optical Pick-up Name LCX-4E
Power requirements
Player:
Nickel metal hydride rechargeable
battery
One NH-14WM(A) (supplied): 1.2V,
1,350 mAh
One LR6 (size AA) battery (not
supplied)
Battery charging stand:
AC power adaptor DC 3V, AC 100V,
50/60Hz
Dimensions
Approx. 74.5 × 81.0 × 17.6 mm (w/h/d)
(3
× 3 1/4× 23/32 in.)
(not including projecting parts and controls)
Mass
Approx. 73 g (2.6 oz) (the player only)
Supplied accessories
Headphones/earphones (1)
Battery charging stand (1)
AC power adaptor (for the supplied battery
charging stand) (1)
Rechargeable battery (1)
Rechargeable battery carrying case (1)
Dry battery case (1)
Carrying pouch (1)
– Continued on next page –
9-873-487-01 Sony Corporation
2002B0500-1 Personal Audio Company
C 2002.02 Published by Sony Engineering Corporation
PORTABLE MINIDISC PLAYER
MZ-E505
)
Battery life
Batteries
Ni-MH
rechargeable
battery
NH-14WM(A)
LR6 (SG)
Sony Alkaline
dry battery
LR6 (SG)4) and
NH-14WM(A)
1)
Measured with the power save function on (see
“Preserving battery power”) is on.
2)
Measured in accordance with the JEITA (Japan
Electronics and Information Technology
Industries Association) standard (using a Sony
MDW-series Mini-disc).
3)
With a fully charged battery
4)
When using a Sony LR6 (SG) “STAMINA” alkaline
dry battery (produced in Japan).
On the A C power adaptor (for the
supplied battery charging stand)
• For use in your house: Use the supplied AC
power adaptor. Do not use any other AC
power adaptor since it may cause the player to
malfunction.
Design and specifications are subject to change
without notice.
1)
(Unit: Approx. hours) (JEITA
SP
Stereo
(normal)
33 37 43
3)
49 54 64
4)
87 97 120
3)
Polarity of the plug
LP2 LP4
Stereo Stereo
2)
TABLE OF CONTENTS
1. SERVICING NOTES ............................................... 3
2. GENERAL ................................................................... 4
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 5
3-2. Battery Case Lid.............................................................. 6
3-3. Case (Rear) ...................................................................... 6
3-4. MAIN Board ................................................................... 7
3-5. Upper Panel Section........................................................ 7
3-6. SWITCH Board............................................................... 8
3-7. Holder Assy (Z) ............................................................... 8
3-8. Mechanism Deck (MT-MZE505-176)............................ 9
3-9. Bracket (L) Assy ............................................................. 10
3-10. Br ac ket (R) Assy ............................................................. 10
3-11. Optical Pick-up (LCX-4E) .............................................. 11
3-12. DC SSM18B Motor (Spindle) (M901) ........................... 11
3-13. DC Motor (Sled) (M902) ................................................ 12
4. TEST MODE.............................................................. 13
5. ELECTRICAL ADJUSTMENTS......................... 18
6. DIAGRAMS
6-1. Block Diagram ................................................................ 24
6-2. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 25
6-3. Printed Wiring Board
– MAIN Board (Component Side) – ............................. 26
6-4. Printed Wiring Board
– MAIN Board (Conductor Side) – ............................... 27
6-5. Schematic Diagram – MAIN Board (1/3) – .................. 28
6-6. Schematic Diagram – MAIN Board (2/3) – .................. 29
6-7. Schematic Diagram – MAIN Board (3/3) – .................. 30
6-8. IC Pin Function Description ........................................... 34
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 MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.
7. EXPLODED VIEWS
7-1. Upper Panel, Case (Rear) Section .................................. 40
7-2. Ornamental Belt Section ................................................. 41
7-3. Mechanism Deck Section (MT-MZE505-176) .............. 42
8. ELECTRICAL PARTS LIST ............................... 43
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
2
SECTION 1
upper panel (silver) battery case lid (silver)
case (rear) (silver)
ornamental belt (violet)
window (ornament)
(violet)
SERVICING NOTES
MZ-E505
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK 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.
NOTES ON LASER DIODE EMISSION CHECK
Never look into the laser diode emission from right above when
checking it for adjustment. It is feared that you will lose your sight.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
(LCX-4E)
The laser diode in the optical pick-up block may suffer electrostatic break-down easily. When handling it, perform soldering
bridge to the laser-tap on the flexible board. Also perform measures against electrostatic break-down sufficiently before the operation. The flexible board is easily damaged and should be handled
with care.
ABOUT VIOLET -COLOR-TYPE
Not a whole set of the violet-color-type is colored violet, but only
the ornamental belt and window (ornament) is violet, and the upper panel, the case (rear) and the battery case lid are colored silver.
COLOR V ARIA TION
SILVER BLUE PINK
E a –––
Hong Kong aaaa
• Replacement of CXD2671-210GA (IC601) used in this set requires a special tool.
VIOLET
laser-tap
OPTICAL PICK-UP FLEXIBLE BOARD
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 during 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.
• In performing the repair with the power supplied to the set, removing the MAIN board causes the set to be disabled.
In such a case, fix a conve x part of the open/close detect switch
(S809 on MAIN board) with a tape in advance.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the leadfree mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
main board
tape
S809
3
MZ-E505
Parts and controls
SECTION 2
GENERAL
This section is extracted from
instruction manual.
The Player
1
2
3
4
1 ./
2 VOL +*/– button
3 i (earphones) jack
4 OPEN switch
5 Battery compartment
6 GROUP button
7 x button
8 HOLD (Locking the control) switch
9 Terminals for charging stand/
q; 3 Color Info-LED
* The
N>*
button
dry battery case (at the bottom)
N>
dots.
and VOL + buttons have tactile
5
6
7
8
9
q;
The earphones with a remote
control
1
2
3
4
5
6
q;
+
–
7
1 Headphones/earphones
2 Stereo mini plug
3 X (pause) button
4 SOUND button
5 RPT/ENT (Repeat/Enter) button
6 PLAYMODE button
7 DISPLAY button
8 x (stop) button**
9 Control ( ./
q; Control VOL +/–
Pull and turn to adjust the volume.
qa HOLD (Locking the control) switch
qs Display window
** The stop button also operates as the enter
button, depending on the function.
N>
)
8
9
qa
qs
The display window of the remote
control
1
2
3
4
6
1 Track number display
2 Charactor information display
3 Disc indication
4 Play mode indication
5 Battery level indication
6 SOUND indication
5
The battery charging stand
3
1 Terminals for charging
2 CHARGE lamp
3 DC IN 3V jack (at the rear)
1
2
4
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SET
3-2. BATTERY CASE LID
(Page 6)
3-3. CASE (REAR)
(Page 6)
MZ-E505
SECTION 3
DISASSEMBLY
3-4. MAIN BOARD
(Page 7)
3-8. MECHANISM DECK
(MT-MZE505-176)
(Page 9)
3-11. OPTICAL PICK-UP
(LCX-4E)
(Page 11)
3-5. UPPER PANEL SECTION
(Page 7)
3-6. SWITCH BOARD
(Page 8)
3-9. BRACKET (L) ASSY
(Page 10)
3-12. DC SSM18B MOTOR
(SPINDLE) (M901)
(Page 11)
3-7. HOLDER ASSY (Z)
(Page 8)
3-10. BRACKET (R) ASSY
(Page 10)
3-13. DC MOTOR
(SLED) (M902)
(Page 12)
5
MZ-E505
)
Note: Follow the disassembly procedure in the numerical order given.
3-2. BATTERY CASE LID
2
claw
3-3. CASE (REAR)
3
battery case lid
1
Open the battery case lid.
1
Close the battery terminal board assy.
2
screw (1.7)
3
two screws (M1.4)
3
two screws (M1.4
4
Remove the case (rear) in the
direction of the arrow.
6
3-4. MAIN BOARD
8
main board
4
boss
5
7
flexible board (motor)
(CN551)
6
flexible board (optical pick-up)
(CN501)
3
flexible board
(switch board)
(CN801)
1
Remove solder of the
battery terminal board assy.
MZ-E505
2
five screws (M1.4 × 2)
3-5. UPPER PANEL SECTION
3
two screws (M1.4)
4
upper panel section
1
flexible board (switch board)
(CN801)
2
Open the upper section.
3
two screws (M1.4)
7
MZ-E505
3-6. SWITCH BOARD
2
convex portion
2
3
switch board
convex portion
3-7. HOLDER ASSY (Z)
1
convex portion
2
1
four screws
(1.7 × 2.5)
4
holder assy (Z)
1
convex portion
3
two bosses
8
3-8. MECHANISM DECK (MT-MZE505-176)
1
step screw (L)
5
Lift up the mechanism deck
in the direction of the arrow.
MZ-E505
3
7
flexible board (motor)
(CN551)
claw
2
nut (M1.4)
8
mechanism deck (MT-MZE505-176)
4
convex portion
6
flexible board (optical pick-up)
(CN501)
9
MZ-E505
3-9. BRACKET (L) ASSY
2
convex portion
3
bracket (L) assy
2
convex portion
3-10. BRACKET (R) ASSY
3
bracket (R) assy
1
two claws
Note: On installation, adjust the
position of knob (open) and
open slider.
open slider
2
convex portion
2
10
convex portion
1
claw
knob (open)
1
claw
2
convex portion
1
2
claw
1
claw
convex portion
)
3-11. OPTICAL PICK-UP (LCX-4E)
4
thrust detent spring
5
optical pick-up (LCX-4E)
3
screw (M1.4)
1
washer
2
gear (SA
MZ-E505
3-12. DC SSM18B MOTOR (SPINDLE) (M901)
2
Remove the flexible board.
3
three tapping screws
1
Remove the four solders.
4
DC SSM18B motor (spindle) (M901)
11
MZ-E505
)
3-13. DC MOTOR (SLED) (M902)
1
Remove the four solders.
4
two screws (M1.4)
5
DC motor (sled) (M902)
2
washer (0.8-2.5
3
gear (SA)
12
SECTION 4
010 V2.200
All on
All off
Microprocessor
version
display
888
BASS12
TEST MODE
MZ-E505
4-1. GENERAL
• When entered in the TEST MODE, this set provides the Overall
Adjustment mode which allows CD and MO discs to be automatically adjusted. In the Overall Adjustment mode, the system
discriminates between CD and MO discs, performs adjustments
in sequence automatically, and displays the faulty location if
any fault is found. In the Manual mode, selected adjustments
can be performed automatically.
• The attached remote control is used to operate the TEST MODE.
Unless otherwise specified in the text, the key means that on the
remote control.
4-2. SETTING THE TEST MODE
4-2-1. How to set the TEST MODE
To set the TEST MODE, two methods are available.
1 Solder bridge and short TAP601 (TEST) on the main board.
Then turn on the power.
– MAIN BOARD (Component Side) –
Remote control LCD
• Press and hold down X key to hold the current display while
the key is being pressed.
4-2-3. How to release the TEST MODE
When method 1 was used:
Turn off the power and open the solder bridge on TAP601 on the
main board.
Note: The solder should be removed clean. The remaining solder
may make a short with the chassis and other part.
When method 2 was used:
Turn off the power.
2 In the normal mode, operate the keys on the set and those on the
4-2-2. Operations when the TEST MODE is set
When the TEST MODE is entered, the system switches to the display check mode within the TEST MODE. From this mode, the
other Test modes can be accessed.
When the TEST MODE is set, the LCD repeats a cycle of the following displays:
212194221196215184216176228173199
222219214198192186223217188220226162177
213200202225208210211209201203204155
C620
C615
R613
TAP601
(TEST)
remote control as specified below:
Turn on HOLD switch on the set. Holding down x (STOP)
key on the set, enter the keys on the remote control in the
following sequence:
> N t > N t . t . t > N
t . t > N t . t X t X
Note: When the power supply is switched on in the state where all
electrical adjustments have not finished, it is displayed on
LCD as “NV Error’’ and the usual operation can’t be per-
formed.
When a power supply is accidentally turn off in the middle
of electrical adjustments, it is again set as test mode and elec-
trical adjustments is mode to complete.
13
MZ-E505
011 XXXS5E
address
mode number
adjusted value
011 OFEJ5E
jitter value
mode number
adjusted value
011 063B5E
block error value
mode number
adjusted value
011 072A5E
ADIP error value
mode number
adjusted value
011 LrefPw 5 E
item title
mode number
adjusted value
4-3. TEST MODE STRUCTURE
Test Mode
(Display Check Mode)
+
VOL
Manual Mode
x
key
+
VOL
VOL
.
Overall Adjustment Mode
x
key
DISPLAY key
x
key
>B
x
key
DISPLAY key
(Press and hold down about 3 sec)
Terminate key checking or open
the top panel.
Self-diagnostic Display Mode
Sound Skip Check Result Display Mode
Servo Mode
Audio Mode
Power Mode
OP Alignment Mode
Key Check Mode
3. Each test item is assigned with a three-digit item number. The
100th place is a major item, 10th place is a middle item, and unit
place is a minor item.
+
: 100th place of mode number
Change Major
Item
> N
Change Middle
Item
> N
Change Minor
Item
VOL
VOL
x
key
VOL
VOL
x
key
> N
.
Change Adjustment
Value
Write Adjustment
Value
X
key : When adjusted value is changed :
Adjusted value is written.
When adjusted value is not changed :
That item is adjusted automatically.
increase
: 100th place of mode number
decrease
+
: 10th place of mode number
increase
: 10th place of mode number
decrease
: Unit place of mode number
increase
: Unit place of mode number
decrease
VOL
VOL
+
: Up
: Down
4. During each test mode, the display is changed from one to
another each time DISPLAY key is pressed.
• Address & Adjusted Value Display
LCD display
4-4. MANUAL MODE
4-4-1. Outline of the function
The Manual mode is designed to perform adjustments and
operational checks on the set’s operation according to each
individual function.
Usually, no adjustments are made in this mode.
However, the Manual mode is used to clear the memory before
performing automatic adjustments in the Overall Adjustment mode.
4-4-2. How to set the Manual mode
1. Set the TEST MODE and turn the control towerd V OL + to set
the Manual mode.
Remote control LCD display
2. During each test, turn and hold the control towerd > N or
. for a while to mo ve the optical pickup on the sled outer or
000 Manual
inner perimeter.
• Jitter Value & Adjusted Value Display
LCD display
• Block Error Value & Adjusted Value Displa y
LCD display
• ADIP Error Value & Adjusted Value Display
LCD display
• Item Title Display
LCD display
14
Note: In the Power mode, the item title display is only displayed.
Loading...