Sony HCD-M80 User manual

SERVICE MANUAL
COMPACT DISC DECK RECEIVER
E Model
SPECIFICATIONS
HCD-M80
Ver 1.1 2002.12
9-874-142-02 Sony Corporation
2002L0500-1 Home Audio Company
C2002.12 Published by Sony Engineering Corporation
HCD-M80 is the Amplifier, Video CD/CD player,
Tape Deck and Tuner section in CMT-M80V.
– Continued on next page –
Model Name Using Similar Mechanism NEW
CD CD Mechanism Type CDM55G-30BD62
Section Base Unit Name BU-30BD62
Optical Pick-up Name A-MAX.3
TAPE Model Name Using Similar Mechanism HCD-M70
Section
Amplifier section
The following measured at 230 V AC, 60 Hz
DIN power output (rated): 15 + 15 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
18 + 18 W
(6 ohms at 1 kHz, 10%
THD)
The following measured at 220 V AC, 60 Hz
DIN power output (rated): 12 + 12 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
15 + 15 W
(6 ohms at 1 kHz, 10%
THD)
Inputs
AUDIO IN MD (VIDEO) (phono jacks):
Sensitivity 500/250 mV,
impedance 47 kilohms
MIC IN (mini jack) Sensitivity 1 mV,
impedance 10 kilohms
Outputs
VIDEO OUT: max. output level
(phono jack) 1 Vp-p, 75 ohms
PHONES: Accepts headphones with
an impedance of 8 ohms
or more
SPEAKER: accepts impedance of 6 to
16 ohms.
Tape deck section
Recording system 4-track 2-channel stereo
Frequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 - 108.0 MHz
(50-kHz step)
Antenna FM wire antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Middle Eastern and Philippine models:
531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)
Other models: 531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)
530 - 1,710 kHz
(with the tuning interval
set at 10 kHz)
Antenna AM loop antenna, external
antenna terminal
Intermediate frequency 450 kHz
VIDEO CD/CD player section
Laser Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
Frequency response 20 Hz – 20 kHz =
(±1 dB)
Video color system format NTSC, PAL

2
HCD-M80
General
Power requirements
Saudi Arabian models: 120 – 127 V or
220 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Thailand model: 220 V AC, 50/60 Hz
Other models: 110 – 120 V or
220 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Power consumption See the nameplate
Dimensions (w/h/d) incl. projecting parts and controls
Approx. 159 ×217 ×
335 mm
Mass Approx. 5.2 kg
Design and specifications are subject to change
without notice.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
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 dur-
ing 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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED
LINE WITH MARK 0ON 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.
This appliance is classified
as a CLASS 1 LASER
product. This label is
located on the rear exterior.
The following caution label is located inside the apparatus.

3
HCD-M80
1. SERVICING NOTES ............................................... 4
2. GENERAL ................................................................... 5
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 6
3-2. Panel (Side) (L), Panel (Side) (R) .................................. 7
3-3. Top Panel Section............................................................ 7
3-4. Mechanical Deck (Tape) ................................................. 8
3-5. Front Panel Section ......................................................... 8
3-6. Back Panel Assy .............................................................. 9
3-7. MAIN Board ................................................................... 9
3-8. CD Mechanism Deck (CDM55G-30BD62) ................... 10
3-9. BU Holder Section .......................................................... 10
3-10. BASE Unit (BU-30BD62) .............................................. 11
3-11. LOADING Board ............................................................ 11
3-12. CAM (CDM55) ............................................................... 12
4. TEST MODE.............................................................. 13
5. ELECTRICAL ADJUSTMENTS
CD Section ...................................................................... 14
Video Section .................................................................. 15
Deck Section ................................................................... 15
6. DIAGRAMS
6-1. Block Diagram – CD SERVO Section – ....................... 16
6-2. Block Diagram – AUDIO/VIDEO CD Section –.......... 17
6-3. Block Diagram – TUNER/TAPE DECK Section – ...... 18
6-4. Block Diagram – MAIN Section – ................................ 19
6-5. Block Diagram
– KEY CONTROL/POWER SUPPLY Section –........... 20
6-6. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 21
6-7. Printed Wiring Board – BD Board – ............................. 22
6-8. Schematic Diagram – BD Board – ................................ 23
6-9. Printed Wiring Board – TC Board –.............................. 24
6-10. Schematic Diagram – TC Board –................................. 25
6-11. Schematic Diagram – VMP Board (1/2) – .................... 26
6-12. Schematic Diagram – VMP Board (2/2) – .................... 27
6-13. Printed Wiring Board – VMP Board – .......................... 28
6-14. Printed Wiring Boards – MAIN/JACK Boards – .......... 29
6-15. Schematic Diagram – MAIN Board (1/2) – .................. 30
6-16. Schematic Diagram
– MAIN (2/2)/JACK Boards –....................................... 31
6-17. Printed Wiring Boards
– CONTROL/LOADING/VIDEO Boards – .................. 32
6-18. Schematic Diagram
– CONTROL/LOADING/VIDEO Boards – .................. 33
6-19. Printed Wiring Board – SWITCH Board – ................... 34
6-20. Schematic Diagram – SWITCH Board – ...................... 35
6-21. Printed Wiring Board – POWER Board – ..................... 36
6-22. Schematic Diagram – POWER Board –........................ 37
6-23. IC Pin Function Description ........................................... 44
TABLE OF CONTENTS
7. EXPLODED VIEWS
7-1. Panel (Side) Section ........................................................ 52
7-2. Front Panel Section ......................................................... 53
7-3. Top Panel Section............................................................ 54
7-4. Chassis Section-1 ............................................................ 55
7-5. Chassis Section-2 ............................................................ 56
7-6. Chassis Section-3 ............................................................ 57
7-7. CD Mechanism Deck (CDM55G-30BD62) ................... 58
7-8. Base Unit Section (BU-30BD62) ................................... 59
8. ELECTRICAL PARTS LIST ............................... 60

4
HCD-M80 SECTION 1
SERVICING NOTES
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.
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.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
MODEL IDENTIFICATION
– Back Panel –
SERVICE POSITION
In checking the tape deck section, prepare jig (extension cable J-
2501-167-A: 1.25 mm Pitch, 17 cores, Length 300 mm).
Part No.
Model Name Part No.
Singapore model 4-238-890-0[]
Thai model 4-238-891-0[]
Saudi Arabia model 4-241-755-0[]
TC board (CN301)
main board (CN301)
Connect jig (extension cable J-2501-167-A)
to the main board (CN301) and TC board (CN301).
Ver 1.1
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure :
While pressing the [DSG] key, press the [ CD] key for 5 seconds.
The message “UNLOCKED” is displayed and the tray is unlocked.
Note: When “LOCKED” is displayed, the tray lock is not released by
turning power on/off with the I/1button.
Z

5
HCD-M80
SECTION 2
GENERAL This section is extracted from
instruction manual.
Main unit
ALPHABETICAL ORDER
CD N7
CD X7
CD SYNCHRO qd
CD SYNCHRO indicator ws
DIRECTION qs
Disc tray 9
Display window 2
DSG w;
FM MODE qf
FUNCTION wa
MIC jack qa
MIC LEVEL q;
PHONES jack qh
PLAY MODE qg
Remote sensor 4
REPEAT qf
TAPE nN ql
TAPE Xql
TUNER AM qj
TUNER FM qj
TUNING +/– 3
TUNING MODE qg
VOLUME +/– 6
P – V
?/1 (power) 1
m/M 3
l/L 3
x5
ZCD 8
zREC qk
Z
x
nN N
?/1
lm
ML
z
XX
1
3
5
wa
6
7
4
8
9
2
qs qa 0qdqfqgqh
qk
qj
w;
ql
ws
BUTTON DESCRIPTIONS
A – M
Remote Control
@/1 (power) 1
N0
Xqg
xqa
./>9
m/M8
+/– 9
ALBUM +/– qf
BASS/TREBLE wa
CD wf
CLEAR qk
CLOCK/TIMER SELECT w;
CLOCK/TIMER SET 4
DISPLAY 2
DSG qd
ENTER 3
KEY CONTROL 7
K.PON/MPX ql
NEXT 9
Numeric buttons 6
BUTTON DESCRIPTIONS
A – N
ALPHABETICAL ORDER
ON SCREEN wj
PICTURE EFFECT wh
PREV 9
RETURN Owg
SELECT 0
SLEEP qj
SPECIAL MENU qh
TAPE wd
TUNER BAND ws
TUNING MEMORY 5
VOLUME +/– qs
O – V
`/1
X
O
1
3
2
qj
qk
qh
4
5
6
8
7
qs
qf
0
qa
qg
qd
9
`/1
X
O
w;
ql
wa
ws
wd
wf
wj
wg
wh
Setting the clock
1 Press ?/1 to turn on the system.
2 Press CLOCK/TIMER SET on the
remote.
3 Press .or >on the remote
repeatedly to set the hour.
4
Press ENTER on the remote.
5 Press .or >on the remote
repeatedly to set the minute.
6 Press ENTER on the remote.
The clock starts working.
If youmakea mistake
Press mor Mon the remote until the
incorrect item flashes, then set it again.
To adjusttheclock
1 Press CLOCK/TIMER SET on the remote.
2 Press .or >on the remote to select
“CLOCK SET?”, then press ENTER on the
remote.
3
Do the same procedures as step 3 to 6 above.

HCD-M80
6
SET
3-2. PANEL (SIDE) (L),
PANEL (SIDE) (R)
(page 7)
3-3. TOP PANEL SECTION
(page 7)
3-4. MECHANICAL DECK (TAPE)
(page 8) 3-5. FRONT PANEL SECTION
(page 8)
3-6. BACK PANEL ASSY
(page 9)
3-11.LOADING BOARD
(page 11)
3-12.CAM (CDM55)
(page 12)
3-7. MAIN BOARD
(page 9)
3-8. CD MECHANISM DECK
(CDM55G-30BD62)
(page 10)
3-9. BU HOLDER SECTION
(page 10)
3-10.BASE UNIT
(BU-30BD62)
(page 11)
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SECTION 3
DISASSEMBLY

HCD-M80
7
Note: Follow the disassembly procedure in the numerical order given.
3-2. PANEL (SIDE) (L), PANEL (SIDE) (R)
3-3. TOP PANEL SECTION
1 four screws
(BTP3
× 10)
2
3 panel (side) (L)
1 screw
(BTP3
× 10)
4 screw
(BTP3
× 10)
4 four screws
(BTP3
× 10)
5
6 panel (side) (R)
3 wire (flat type) (17 core)
(CN301)
4 top panel section
1 screw
(BTP3 × 10
)
2

HCD-M80
8
3-4. MECHANICAL DECK (TAPE)
3-5. FRONT PANEL SECTION
3 shield case (TC)
5 connector
1 two screws
(BVTP3
× 8)
qs MD bracket (R
)
qa two screws
(BVTT2.6
× 5)
6 screw
(BVTT2.6
× 5)
7
6 two screws
(BVTT2.6
× 5)
1 two screws
(BVTP3
× 8)
9 two screws
(BVTT2.6
× 5)
qd mechanical deck
(tape)
2
0 MD bracket (L)
4 wire (flat type)
(FFC) (8 core)
8 TC board
1 flexible flat cable (19 core)
(CN605)
2 connector
(CN304)
3 three screws
(BTP3
× 8)
4 screw
(BTP4
× 8)
5 ground wire
6 front panel section

HCD-M80
9
3-6. BACK PANEL ASSY
3-7. MAIN BOARD
1 connector
(CN301)
VMP board
3 back panel assy
2 four screws
(BTP3
× 8)
2 two screws
(BTP3
× 8)
1 wire (flat type) (25 core)
(CN603)
1 wire (flat type) (17 core)
(CN602)
2 connector
(CN902)
4 main board
3 screw
(BTP3 × 12)

HCD-M80
10
3-8. CD MECHANISM DECK (CDM55G-30BD62)
3-9. BU HOLDER SECTION
1 connector
(CN903)
2 two screws
(DIA. 2.6
× 6)
6 two claws
4 screw
(BVTP3
× 8)
5 boss
5 boss
7 flexible flat cable (28 core
)
(CN101)
8 CD mechanism deck
(CDM55G-30BD62)
3 Open the bracket (MPEG)
in the direction of arrow
A .
1 connector
(CN606)
A
1 floating screw
(PTPWHM2.6)
3 shaft
4 shaft (BU)
5 BU holder section
2 shaft