Read Sony HMD-M11 Service Manual online
MICROFILM
HMD-M11
US Model
Canadian Model
AEP Model
UK Model
E Model
SERVICE MANUAL
MINI DISC DECK/TUNER/PREAMPLIFIER
Model Name Using Similar Mechanism
NEW
MD Mechanism Type
MDM-3C
Optical Pick-up Name
KMS-260A/J1N
HMD-M11 is the mini disc deck,
tuner and preamplifier section
in CMT-M11C.
tuner and preamplifier section
in CMT-M11C.
U.S and foreign patents licensed from Dolby Labora-
tories Licensing Corporation.
tories Licensing Corporation.
SPECIFICATIONS
MiniDisc deck section
System
MiniDisc digital audio system
Disc
MiniDisc
Laser
Semiconductor laser (
λ
= 780 nm)
Laser output power
Less than 44.6 mW*
* This output is the value measured at a distance of 200 mm from the ob-
jective lens surface on the optical pick-up block with 7 mm aperture.
Laser diode properties
Material: GaAlAs
Revolutions (CLV)
Approx. 400 rpm to 900 rpm
Error correction
Advanced Cross
Interleave Reed Solomon Code (ACIRC)
Interleave Reed Solomon Code (ACIRC)
Sampling frequency
44.1 kHz
Modulation system
EFM (Eight-to-Fourteen Modulation)
Number of channels
2 stereo channels
Frequency response
20 to 20,000 Hz ± 0.5 dB
Signal-to-noise ratio
Over 92 dB (during playback)
Wow and flutter
Below measurable limit
Inputs
DIGITAL IN (CD OPTICAL IN):
Square optical connector jack, impedance opti-
cal wave length 660 nm.
Square optical connector jack, impedance opti-
cal wave length 660 nm.
Tuner section
Tuning range
US, CND model
US, CND model
FM: 87.5 – 108 MHz
(100 kHz step)
AM: 530 – 1,710 kHz
(at 10 kHz interval)
(100 kHz step)
AM: 530 – 1,710 kHz
(at 10 kHz interval)
AEP, UK model
FM: 87.5 – 108 MHz
(50 kHz step)
AM: 522 – 1,611 kHz
(50 kHz step)
AM: 522 – 1,611 kHz
E, HK, SP, MY model
FM: 87.5 – 108 MHz
(50 kHz step)
AM: 531 – 1,602 kHz
(at 9 kHz interval)
530 – 1,710 kHz
(at 10 kHz interval)
(50 kHz step)
AM: 531 – 1,602 kHz
(at 9 kHz interval)
530 – 1,710 kHz
(at 10 kHz interval)
Intermediate frequency
FM: 10.7 MHz
AM: 450 kHz
AM: 450 kHz
Antenna terminals
FM: 75 ohm unbalanced
AM: External antenna terminal
AM: External antenna terminal
Timer
Quartz lock system
Timer setting
One-minute step
Sleep timer
10-minute step, max. 90 minutes
– Continued on next page –
– 2 –
Preamplifier section
Inputs
TAPE IN jack:
Stereo phone jacks, sensitivity 220 mV, imped-
ance 47 kilohms
Stereo phone jacks, sensitivity 220 mV, imped-
ance 47 kilohms
Outputs
OUTPUT jack:
Stereo phone jacks, 1 V, 1 kilohm
TAPE OUT jack:
Stereo phone jacks, 1 V, 1 kilohm
PHONES (headphones) jack:
Stereo mini jack, accepts headphones of 8 ohms
or more.
Stereo phone jacks, 1 V, 1 kilohm
TAPE OUT jack:
Stereo phone jacks, 1 V, 1 kilohm
PHONES (headphones) jack:
Stereo mini jack, accepts headphones of 8 ohms
or more.
General
Power requirements
US, CND model
US, CND model
120 V AC, 60 Hz
AEP, UK model
220 – 230 V AC, 50/60 Hz
E, HK, SP, MY model
120 V or 220 – 240 V AC, 50/60 Hz adjustable
with voltage selector
with voltage selector
Power consumption
US, CND model
US, CND model
19 W
Except US, CND model
20 W
Dimensions
Approx. 142
×
125
×
256 mm (w/h/d)
(5
5
/
8
×
5
×
10 inches) incl. projecting parts and
controls
Mass
Approx. 3.3 kg (6 lb 10 oz)
Design and specifications are subject to change without notice.
•
Abbreviation
CND
CND
: Canadian
HK
: Hong Kong
MY
: Malaysia
SP
: Singapore
TABLE OF CONTENTS
1.
SERVICING NOTES
1-1.
Check Mode of Fluorescent Indicator Tube,
Buttons, and LED’s ........................................................
Buttons, and LED’s ........................................................
5
1-2.
Check Mode of Amplifier Section ..................................
5
1-3.
Extension Cable ..............................................................
5
1-4.
Aging Mode ....................................................................
5
2.
GENERAL
..................................................................
6
3.
DISASSEMBLY
........................................................ 23
4.
TEST MODE
4-1.
Precautions for Use of Test Mode .................................. 30
4-2.
Setting the Test Mode ..................................................... 30
4-3.
Releasing the Test Mode ................................................ 30
4-4.
Basic Operations of the Test Mode ................................ 30
4-5.
Selecting the Test Mode ................................................. 30
4-6.
Operating the Continuous Playback Mode ..................... 31
4-7.
Operating the Continuous Recording Mode ................... 31
4-8.
EEP Mode ....................................................................... 32
4-9.
Functions of Other Buttons ............................................ 32
4-10. Test Mode Displays ........................................................ 32
4-11. Meanings of Other Displays ........................................... 32
4-11. Meanings of Other Displays ........................................... 32
5.
ELECTRICAL ADJUSTMENTS
5-1.
Precautions for Checking Laser Diode Emission ........... 33
5-2.
Precautions for Use of Optical Pick-up (KMS-260A) ... 33
5-3.
Precautions for Adjustments ........................................... 33
5-4.
Creating MO Continuously Recorded Disc .................... 33
5-5.
Temperature Compensation Offset Adjustment ............. 34
5-6.
Laser Power Adjustment ................................................. 34
5-7.
Traverse (E-F Balance) Adjustment ............................... 35
5-8.
Focus Bias Adjustment ................................................... 36
5-9.
Error Rate Check ............................................................ 36
5-10. Focus Bias Check ........................................................... 36
5-11. Adjusting Points and Connecting Points ........................ 37
5-11. Adjusting Points and Connecting Points ........................ 37
6.
DIAGRAMS
6-1.
Block Diagram (1/3) ....................................................... 39
6-2.
Block Diagram (2/3) ....................................................... 41
6-3.
Block Diagram (3/3) ....................................................... 43
6-4.
Printed Wiring Boards
– MD MECHANISM DECK Section – ......................... 48
– MD MECHANISM DECK Section – ......................... 48
6-5.
Schematic Diagram
– MD MECHANISM DECK Section – ......................... 51
– MD MECHANISM DECK Section – ......................... 51
6-6.
Schematic Diagram – MECHANISM CONTROL,
A/D, D/A CONVERTER Section – ............................... 56
A/D, D/A CONVERTER Section – ............................... 56
6-7.
Printed Wiring Boards – MECHANISM CONTROL,
A/D, D/A CONVERTER Section – ............................... 61
A/D, D/A CONVERTER Section – ............................... 61
6-8.
Printed Wiring Board – AUDIO/TUNER Section – ...... 63
6-9.
Schematic Diagram – AUDIO/TUNER Section – ......... 65
6-10. Schematic Diagram
– MASTER CONTROL, POWER SUPPLY Section – .. 69
6-11. Printed Wiring Boards
– MASTER CONTROL, POWER SUPPLY Section – .. 73
6-12. Schematic Diagram —DISPLAY Section— .................. 76
6-13. Printed Wiring Boards —DISPLAY Section— .............. 79
6-14. IC Pin Function Description ........................................... 85
6-13. Printed Wiring Boards —DISPLAY Section— .............. 79
6-14. IC Pin Function Description ........................................... 85
7.
EXPLODED VIEWS
................................................ 96
8.
ELECTRICAL PARTS LIST
................................. 100
– 3 –
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
!
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
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.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
CAUTION
Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.
procedures other than those specified herein may
result in hazardous radiation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
exceeding the limit for Class 1.
The following caution label is located inside the unit.
MODEL IDENTIFICATION
– Specification Label –
– Specification Label –
MODEL NO. HMD-M11
TUNER MINIDISC DECK
SERIAL No.
MADE IN JAPAN
MADE IN JAPAN
US, Canadian model:
AC:120 V 60 Hz 19 W
AEP, UK model:
AC: 220 – 230 V
⁄
50/60 Hz 20 W
E, Hong Kong, Singapore, Malaysia model:
AC: 120 V/220 – 240 V
⁄
50/60 Hz 20 W
– 4 –
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
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
care.
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
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.
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.
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.
aged by heat.
Flexible Circuit Board Repairing
•
Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
ing repairing.
•
Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
circuit board (within 3 times).
•
Be careful not to apply force on the conductor when soldering
or unsoldering.
or unsoldering.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by
the manufacturer.
Discard used batteries according to the manufacturer’s instructions.
Replace only with the same or equivalent type recommended by
the manufacturer.
Discard used batteries according to the manufacturer’s instructions.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
ADVARSEL
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende type
anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens
instruksjoner.
VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en likvärdig typ som
rekommenderas av apparattillverkaren.
Kassera använt batteri enligt gällande föreskrifter.
Använd samma batterityp eller en likvärdig typ som
rekommenderas av apparattillverkaren.
Kassera använt batteri enligt gällande föreskrifter.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.