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SERVICE MANUAL
COMPACT DISC DECK RECEIVER
SPECIFICATIONS
HCD-MD595
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
Tourist Model
HCD-MD595 is the Amplifier, CD player, MD
Deck and Tuner section in DHC-MD595.
­ Continued on next page ­
Model Name Using Similar Mechanism
NEW
CD Mechanism Type
CDM55A-21BD53
Base Unit Name
BU-21BD53
Optical Pick-up Name
OP Assy (A-MAX. 2)
Model Name Using Similar Mechanism
NEW
MD Mechanism Type
MDM-7X2A
Optical Pick-up Name
KMS-262A/J1N
CD
Section
MD
Section
US and foreign patents licensed from Dolby
Laboratories.
CD player section
System
Compact disc and digital audio
system
Laser
Semiconductor laser (
=800 nm)
Emission duration: continuous
Laser output
Max. 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 a
7 mm aperture.
Frequency response
2 Hz ­ 20 kHz
MD deck section
System
MiniDisc digital audio system
Laser
Semiconductor laser (
=780 nm)
Emission duration: continuous
Laser output
Max. 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 a
7 mm aperture.
Sampling frequency
44.1 kHz
Frequency response
5 Hz ­ 20 kHz
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Tourist model:
76.0 ­ 108.0 MHz
(50 kHz step)
European model:
87.5 ­ 108.0 MHz
(50 kHz step)
Other models:
87.5 ­ 108.0 MHz
(100 kHz step)
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
Amplifier section
For the U.S. and Canadian models
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
With 6 ohm loads, both channels driven, from
120 ­ 10,000 Hz; rated 20 watts per channel minimum RMS
power, with no more than 0.9% total harmonic distortion from
250 milliwatts to rated output.
Continuous RMS power output:
25 + 25 watts (6 ohms at 1 kHz,
10% THD, 120 V) (Reference)
European model:
DIN power output (Rated):25 + 25 watts (6 ohms at 1 kHz,
DIN, 230 V)
Continuous RMS power output (Reference):
30 + 30 watts (6 ohms at 1 kHz,
10% THD, 230 V)
Music power output (Reference):
50 + 50 watts
Other models:
DIN power output (Rated):20 + 20 watts (6 ohms at 1 kHz,
DIN, 240 V)
18 + 18 watts (6 ohms at 1 kHz,
DIN, 220 V)
Continuous RMS power output (Reference):
25 + 25 watts (6 ohms at 1 kHz,
10% THD, 240 V)
23 + 23 watts (6 ohms at 1 kHz,
10% THD, 220 V)
Peak Music Power Output: 400 watts
Inputs
TAPE IN (phono jacks):
voltage 250 mV, impedance
47 kilohms
DIGITAL OPTICAL IN (Supported sampling frequencies:
32 kHz, 44.1 kHz and 48 kHz)
ANALOG IN (stereo minijack):
voltage 250 mV, impedance
47 kilohms
Outputs
TAPE OUT (phono jacks): voltage 250 mV, impedance
1 kilohm
PHONES (stereo minijack):
accepts headphones of 8 ohms or
more.
SPEAKER:
accepts impedance of 6 to 16
ohms.


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AM tuner section
Tuning range
European model:
531 ­ 1,602 kHz
(with the interval set at 9 kHz)
Other models:
531 ­ 1,602 kHz
(with the interval set at 9 kHz)
530 ­ 1,710 kHz
(with the interval set at 10 kHz)
Antenna
AM loop antenna
External antenna terminals
Intermediate frequency
450 kHz
General
Power requirements
U.S.A. and Canadian models:
120 V AC, 60 Hz
Australian model:
220 ­ 240 V AC, 50/60 Hz
Chinese model:
220 V AC, 50/60 Hz
European model:
230 V AC, 50/60 Hz
Other models:
110 ­ 120 V or 220 ­ 240 V
AC, 50/60 Hz
Power consumption
U.S.A. and Canadian models:
60 watts during normal operation
Other models:
70 watts during normal operation
Dimensions (w/h/d) incl. projecting parts and controls
Approx. 215
× 147 × 326 mm
Mass
Approx. 5.0 kg
Design and specifications are subject to change
without notice.
SELF-DIAGNOSIS FUNCTION
The self-diagnosis function consists of error codes for customers, which are displayed automatically when errors occur, and error codes,
which show the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the
following box in the instruction manual. For details on how to check error codes during servicing, refer to the following "Procedure for
using the Self-Diagnosis Function (Error History Display Mode)".
Self-diagnosis Display
This system has a Self-diagnosis display function
to let you know if there is a system malfunction.
The display shows a code made up of three or five
letters and a message alternately to show you the
problem. To solve the problem refer to the
following list. If any problem persists, consult
your nearest Sony dealer.
C11/Protected
The MD is protected against erasure.
cRemove the MD and slide the tab to close the
slot.
C12/Cannot Copy
You tried to record a CD or MD with a format
that the system does not support, such as a CD-
ROM.
cRemove the disc and turn off the system once,
then turn it on again.
C13/REC Error
Recording could not be performed properly.
cMove the system to a stable place, and start
recording over from the beginning.
The MD is dirty or scratched, or the MD does
not meet the standards.
cReplace the MD and start recording over from
the beginning.
C13/Read Error
The MD deck cannot read the disc information
properly.
cRemove the MD once, then insert it again.
C14/Toc Error
The MD deck cannot read the disc information
properly.
cReplace the MD.
cErase all the recorded contents of the MD
using the All Erase function.
C41/Cannot Copy
The sound source is a copy of a commercially
available music software, or you tried to record
a CD-R (Recordable CD).
cThe Serial Copy Management System
prevents making a digital copy.
You cannot record a CD-R.
C71/Check OPT-IN
This appears momentarily because of the signal
of the digital broadcast during recording.
cThere is no affect on the recorded contents.
No component is connected to the DIGITAL
OPTICAL IN jack, or a digital component is
not connected properly.
cConnect a digital component to the DIGITAL
OPTICAL IN jack properly using a digital
connecting cable (not supplied).
The connected digital component is not turned
on.
cSee the operating instructions supplied with
the connected component and confirm
whether the component is turned on.
The digital connecting cable connected to the
DIGITAL OPTICAL IN jack is pulled out, or
the connected digital component is turned off
during digital recording.
cConnect the cable, or turn on the digital
component.
E0001/MEMORY NG
There is an error in the internal data that the
system needs in order to operate.
cConsult your nearest Sony dealer.
E0101/LASER NG
There is a problem with the optical pickup.
cThe optical pickup may have failed. Consult
your nearest Sony dealer.
MD SECTION
PROCEDURE FOR USING THE SELF-DIAGNOSIS FUNCTION (ERROR HISTORY DISPLAY MODE)
Note 1: About "R"
As this unit has only a few buttons, some operations require the use of remote commander (RM-S5EN/provided with unit: 1-476-086-21)
buttons. These operations are indicated as "R" in this manual.
Example: MENU/NO "R" ...Press the [MENU/NO] button of the remote commander.
Note 2: Incorrect operations may be performed if the MD test mode is not entered properly.
In this case, press the I/1 button to turn the power off, and retry to enter the MD test mode.
Note 3: Perform the self-diagnosis function in the "error history display mode" in the MD test mode. The following describes the least required
procedure. Be careful not to enter other modes by mistake. If you set other modes accidentally, press the MENU/NO "R" button to exit the
mode.
Procedure:
1. Press the I/1 button to turn the power on.
2. Press the [FUNCTION] button to set the MD function.
3. Press three buttons of M > , [PLAY MODE], and [MD
] simultaneously to enter the MD test mode and display "[Check]".
4. Press the . m "R" or M > "R" button to display "[Service]".
5. Press the ENTER/YES "R" button to display "AUTO CHECK", and press the M > "R" button to display "Err Display".
6. Press the ENTER/YES "R" button to enter the error history mode and display "op rec tm".
7. Select the contents to be displayed or executed using the . m "R" or M > "R" button.
8. Press the [CD-MD SYNC NORMAL] button to light up "IT" indicator, then press the [REC MODE] button will display or execute the
contents selected.
9. Press the [REC MODE] button another time returns to step 7.
10. Press the MENU/NO "R" button displays "Err Display" and release the error history mode.
11. To release the MD test mode, press the [REPEAT] button to display "Initialize" and release the MD test mode.
Z


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ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS
Display
Details of History
op rec tm
Displays the recording time.
Displayed as "rssssssh".
The displayed time is the total time the laser is set to the high power state.
This is about 1/4 of the actual recording time.
The time is displayed in decimal digits from 0h.
op play tm
Displays the playback time.
Displayed as "p
ssmin". The displayed time is the total of the actual play time.
spdl rp tm
Displays the spindle motor running time.
Displayed as "rssssssh".
The time is displayed in decimal digits from 0h.
retry err
Displays the total number of retries during recording and number of retry errors during play.
Displayed as "r ss p ss".
"r" indicates the retries during recording while "p" indicates the retry errors during play.
The number of retries and retry errors are displayed in hexadecimal digits from 00 to FF.
total err
Displays the total number of errors.
Displayed as "total ss".
The number of errors is displayed in hexadecimal digits from 00 to FF.
err history
Displays the 10 latest errors.
Displayed as "0s ErrCd @@".
s indicates the history number. The smaller the number, the more recent is the error. (00 is the latest)
@@ indicates the error code.
Refer to the following table for the details. The error history can be switched by pressing the . m "R" or
M > "R"
button.
retry adrs
Display the 5 latest retry address.
Display as "ss [email protected]@@@".
ss indicates the history number. The smaller the number, the more recent is the error. (00 is the latest)
@@@@ indicates the cluster of retry address.
The number of retry address can be switched by pressing the . m "R" or M > "R" button.
er refresh
Mode to clear the error history and retry address history.
Procedure:
1) Press the [REC MODE] button.
2) The display will change to "er refresh?", and then press the ENTER/YES "R" button.
The operation is over if "Complete!" is displayed.
After this mode was executed, check the following:
· The data have been cleared.
· Perform the recording and playing to check that the mechanism operates normally.
tm refresh
Mode to clear cumulative time of "op rec tm" and "op play tm".
Procedure:
1) Press the [REC MODE] button.
2) The display will change to "tm refresh?", and then press the ENTER/YES "R" button.
The operation is over if "Complete!" is displayed.
op change
Mode to clear cumulative time of "op rec tm" and "op play tm".
These historical data are used to determine the timing when the optical pick-up is to be replaced. When the
optical pick-up was replaced, perform this operation to clear historical data.
Procedure:
1) Press the [REC MODE] button.
2) The display will change to "op change?", and then press the ENTER/YES "R" button.
The operation is over if "Complete!" is displayed.
spdl change
Mode to clear cumulative time of "spdl rp tm".
This historical data is used to determine the timing when the spindle motor is to be replaced. When the spindle
motor was replaced, perform this operation to clear historical data.
Procedure:
1) Press the [REC MODE] button.
2) The display will change to "spdl change?", and then press the ENTER/YES "R" button.
The operation is over if "Complete!" is displayed.


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Error Code
Details of Error
10
Loading failed
12
Loading switch combination is illegal
20
Head of PTOC could not be read within the
specified time
21
Head of PTOC could be read but its content is
erroneous
22
Access to UTOC could not be made within the
specified time
23
UTOC could be not read within the specified
time
24
Content of UTOC is erroneous
30
Playing could not start
31
Content of sector is erroneous
40
Cause of retry occurred during normal recording
41
D-RAM overflowed and retry was executed
42
Retry was executed during the writing to TOC
43
S.F editing was interrupted by retry
50
Address could not be read except in access
processing
51
Focusing failed and it is out of control
60
Unlock retry
Table of Error Codes


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CD SECTION
PROCEDURE FOR USING THE SELF-DIAGNOSIS
FUNCTION (ERROR HISTORY DISPLAY MODE)
1. To Enter The CD Test Mode
Procedure:
1. Press the I/1 button to turn the power on.
2. Press the [FUNCTION] button to set the CD function.
3. Press three buttons of M > , [CD ], and [TUNER/BAND]
simultaneously.
4. The set enter the CD test mode (menu) and displays "dvt ERR
CODE".
Note: If the triple button pressing failed to activate the CD test mode,
press the [CD
] button, and the [TUNER/BAND] button in this
order while pressing the M > button. Also, release the
[TUNER/BAND], [CD ], and M > buttons in this order, when
releasing the buttons.
If the consequence was diaplayed except "dvt ERR CODE", press
the . m button to display "dvt ERR CODE".
2. Display of Error Number
Procedure:
1. Press the [CD
] button to display as bellow.
(a) Number of mechanical error.
(b) Number of no disc error that occurred after chucking.
2. Press the x (CD) button and return to CD test mode menu
("dvt ERR CODE" is displayed).
3. Display of Mechanical Error History
Procedure:
1. In the CD test mode menu, press the M > button to display
"dvt ECODE MEC".
2. Press the [CD
] button to display as bellow.
(a) The number of mechanical error.
Latest one "00" to last ten "09"
(Press the . m or M > button to change the error
number)
(b) FF: Mechanical error, when normal operation.
Other display: Mechanical error, between mechanical initialize.
(c), (d), (e): Not used in servicing.
3. Press the x (CD) button and return to CD test mode menu
("dvt ECODE MEC" is displayed).
Display
Emc=**Edc=**
(a)
(b)
Z
Z
Z
Z
Display
E**M********00
(c)
(a)
(b)
(d) (e)
Z
4. Display of No Disc Error History
Procedure:
1. In the CD test mode menu, press the M > button to display
"dvt ECODE BU".
2. Press the [CD
] button to display as bellow.
(a) The number of no disc error.
Latest one "00" to last ten "09"
(Press the . m or M > button to change the error
number)
(b) 01: Focus error
02: GFS error
03: Set up error
04: Focus error (not used in servicing)
(c) 00:No disc error (Did not chucking retry)
02: No disc error (Chucking retry to completion)
(d) The status, when determined no disc error.
2x: During setting up
3x: During reading TOC
4x: During accessing
5x: During playback
6x: During pause
7x: During manual search (during playback)
8x: During manual search (during pause)
3. Press the x (CD) button and return to CD test mode menu
("dvt ECODE BU" is displayed).
4. To Erase The Error History
When returning the unit to the customer after completing repairs,
perform this to erase the past error history.
Procedure:
1. In the CD test mode menu, press the M > button to display
"dvt ECNT0 MEC". (When erase the mechanical error)
Or one more press the M > button to display "dvt ECNT0
BU". (When erase the no disc error)
2. Press the [CD ] button to erase the error history (mechanical
error or no disc error) and display as bellow.
5. To Release The CD Test Mode
Press the I/1 button to turn the power off.
Z
Display
E**D********
(c)
(a)
(b)
(d) (e)
Z
Display
Emc=00Edc=00