DHC-MD5, HCD-MD5 - Sony Audio Service Manual (repair manual)

dhc-md5, hcd-md5 service manual
Model
DHC-MD5 HCD-MD5
Pages
74
Size
1.01 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / S/M HCD-MD5 ''96 AEP UK E TOUR
File
dhc-md5-hcd-md5.pdf
Date

Read Sony DHC-MD5 / HCD-MD5 Service Manual online

MICROFILM
AEP Model
UK Model
E Model
Tourist Model
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
HCD-MD5
SPECIFICATIONS
CD player section
System
Compact disc and digital
audio system
Laser
Semiconductor laser
(
λ
=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 7 mm
aperture.
Frequency response
2 Hz – 20 kHz (±0.5 dB)
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
MD deck section
System
MiniDisc digital audio
system
Laser
Semiconductor laser
(
λ
=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.
Recording time
74  minutes max. (using
MDW-74)
Sampling frequency
44.1 kHz
Frequency response
5 Hz to 20 kHz
Amplifier section
DIN power output
40 W + 40 W
(6 ohms, at 1 kHz, DIN)
Continuous RMS power output
50 + 50 watts
(6 ohms at 1 kHz, 10% THD)
Peak music power output
700 watts
Music power output
160 watts
Inputs
VIDEO/GAME IN
(phono jacks)
(switchable)
VIDEO IN:
voltage 250 mV,
impedance 47 kilohms
GAME IN:
voltage 450 mV,
impedance 47 kilohms
TAPE IN (phono jacks):
voltage 250mV,
impedance 47 kilohms
Outputs
TAPE OUT (phono jacks):
voltage 250 mV
impedance 1 kilohms
PHONES (stereo phone jack):
accepts headphones of
8 ohms or more.
SPEAKER:
accepts impedance of 6 to
16 ohms.
Model Name Using Similar Mechanism
HCD-W55
CD
CD Mechanism Type
CDM38A-5BD19
Section
Base Unit Name
BU-5BD19
Optical Pick-up Name
KSS-213B/K-N
Model Name Using Similar Mechanism
NEW
MD
MD Mechanism Type
MDM-2FR
Section
Base Unit Name
MBU-2F
Optical Pick-up Name
KMS-210A/J-N
– Continued on next page –
HCD-MD5 is the amplifier, CD, MD
and tuner section in DHC-MD5.
US and foreign patents licensed from Dolby
Laboratories Licensing Corporation.
– 2 –
TABLE  OF  CONTENTS
1.
SERVICING NOTES
.................................................. 3
2.
GENERAL
Index to Parts and Controls ...............................................
5
3.
DISASSEMBLY
............................................................
7
4.
TEST MODE
................................................................. 14
5.
ELECTRICAL ADJUSTMENTS
MD Section ........................................................................ 20
Tuner Section ..................................................................... 25
CD Section ......................................................................... 26
6.
DIAGRAMS
6-1.
Block Diagrams
CD Section ......................................................................... 29
Tuner Section ..................................................................... 31
MD Section ........................................................................ 35
Main Section ...................................................................... 39
6-2.
Schematic Diagram – Tuner Section –
(AEP, G, UK model) .......................................................... 44
6-3.
Printed Wiring Board – Tuner Section –
(AEP, G, UK model) .......................................................... 46
6-4.
Printed Wiring Board – Tuner Section –
(EXCEPT AEP, G, UK model) .......................................... 47
6-5.
Schematic Diagram – Tuner Section –
(EXCEPT AEP, G, UK model) .......................................... 48
6-6.
Printed Wiring Board – CD Section – ............................... 50
6-7.
Schematic Diagram – CD Section – .................................. 53
6-8.
Printed Wiring Board –MD Section – ............................... 56
6-9.
Schematic Diagram –MD Section – .................................. 59
6-10. Schematic Diagram – Digital Section – ............................ 63
6-11. Printed Wiring Boards – Digital Section – ........................ 67
6-12. Schematic Diagram – Relay Section – .............................. 70
6-13. Printed Wiring Board – Relay Section – ........................... 73
6-14. Printed Wiring Board – Main Section – ............................ 76
6-15. Schematic Diagram – Main Section – ............................... 79
6-16. Schematic Diagram – Power Section – ............................. 83
6-17. Printed Wiring Boards – Power Section – ......................... 87
6-18. Schematic Diagram – Power AMP Section – .................... 92
6-19. Printed Wiring Boards – Power AMP Section – ................ 95
6-20. Schematic Diagram – Panel Section – ............................... 99
6-21. Printed Wiring Boards – Panel Section – ........................ 103
6-22. IC Pin Function Description ............................................ 109
7.
EXPLODED VIEWS
................................................. 123
8.
ELECTRICAL PARTS LIST
.................................. 132
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Tourist model:
76.0 – 108.0 MHz (50 kHz step)
Other models:
87.5 – 108.0 MHz (50 kHz step)
Aerial
FM lead aerial
Aerial terminals
75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
German model:
AM:
522 – 1,611 kHz
(with the interval set at 9 kHz)
AEP, UK models:
MW:
522 – 1,611 kHz
(with the interval set at 9 kHz)
LW:
144 – 288 kHz
(with the interval set at 3 kHz)
Tourist model:
AM:
531 – 1,602 kHz
(with the interval set at 9 kHz)
530 –1,710 kHz
(with the interval set at 10 kHz)
Malaysia, Singapore,
Saudi Arabia,
Hong Kong models:
MW:
531 – 1,602 kHz
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)
SW:
5.95 – 17.90 MHz
Aerial
AM loop aerial
External aerial terminals
Intermediate frequency 450 kHz
General
Power requirements
220 – 230 V AC, 50/60 Hz
(AEP, German model)
110 – 120 V or 220 – 240 V AC,
50/60 Hz  Adjustable with the
voltage selector (Other model)
Power consumption
85 watts (Tourist model)
130 watts (Other models)
Dimensions
Amplifier/Tuner/MD/CD section:
Approx. 280 
×
 240 
×
 360 mm
(11 
1
/
8
 
×
 9 
1
/
2
 
×
 14  
1
/
4
 in) (w/h/d) incl.
projecting parts and
controls
(U.K., Hong Kong model)
Approx. 280 
×
 240 
×
 350 mm
(11 
1
/
8
  
×
 9 
1
/
2
 
×
 13 
7
/
8
 in) (w/h/d) incl.
projecting parts and
controls (Other models)
Mass
Amplifier/Tuner/MD/CD section:
Approx. 9.4 kg
(20 lb 12 oz)
Supplied accessories:
AM loop aerial (1)
Remote RM-S5MD (1)
Sony SUM-3 (NS)
batteries (2)
FM lead aerial (1)
Speaker cords (2)
Design and specifications are subject to change without notice.
– 3 –
SECTION  1
SERVICING  NOTES
MODEL  IDENTIFICATION
— BACK  PANEL —
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
!
  OR  DOTTED
LINE  WITH  MARK  
!
  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.
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
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.
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 soldering iron around 270 ˚C during re-
pairing.
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 pro-
cedures other than those specified herein may result in
hazardous radiation exposure.
Laser component in this product is capable of emitting radia-
tion exceding the limit for Class 1.
This appliance is classified as a
CLASS 1 LASER product.
The CLASS 1 LASER PROD-
UCT MARKING is located on the
rear exterior.
This caution label
is located inside
the unit.
Note:
Be sure to connect all wires (including FFC) in the MD
section before applying power or ICs may be damaged.
MODEL
PARTS No
AEP model
4-984-208-1
π
UK model
4-984-208-2
π
Saudi Arabia, Singapore,
4-984-208-3
π
Malaysia model
German model
4-984-208-4
π
Hong Kong model
4-984-208-5
π
Tourist model
4-984-208-7
π
Parts No.
 
– 4 –
COLD  START  METHOD
While pressing the  POWER  key, insert the AC plug cord into the
AC outlet. Cold start will be set.
Note :
As cold start will erase all the preset contents etc., do not set it in
normal operations.
FORCED  RESET  SWITCH
The switch on the power board (S101) is the forced reset switch for
IC201.
Press it for about one second after turning on the power after disas-
sembling and assembling the unit again.
 Parts Location
[POWER  BOARD]  — Component side —
CN803
CN802
IC821
IC102
S101
RESET
Switch
CN807
CN808
Page of 74

Download Sony DHC-MD5 / HCD-MD5 Service Manual (Repair Manual)

Here you can read online and download Sony DHC-MD5 / HCD-MD5 Service Manual in PDF. DHC-MD5 / HCD-MD5 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony DHC-MD5 / HCD-MD5 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.