HCD-MD1EX
SERVICE MANUAL
HCD-MD1EX is the Amplifier, CD play er ,
Mini disc Deck and Tuner section in
CMT-MD1.
U.S. and foreign patents licensed form Dolby Laboratories
Licensing Corporation.
Section
Section
CD
MD
US Model
Canadian Model
AEP Model
UK Model
E Model
Model Name Using Similar Mechanism HCD-MD333
Base Unit Name BU-22BD19
Optical Pick-up Name KSS-213B/K-N
Model Name Using Similar Mechanism HCD-MD333
Mechanism Name MDM-3J
Optical Pick-up Name KMS-260A/J1N
SPECIFICATIONS
– Continued on next page –
MICROFILM
COMPACT Hi-Fi COMPONENT SYSTEM
7-7. SCHEMATIC DIAGRAM – BD (CD) Section – • See page 77 for Waveforms. • See page 79 for IC Block Diagrams.
HCD-MD1EX
(Page 59)
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : STOP
( ) : CD PLAY
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
: Impossible to measure
∗
– 45 – – 46 –
Les composants identifiés par une marque ! sont
critiques pour la sécurité. Ne les remplacer que
par une piéce portant le numéro spécifié.
7-9. SCHEMATIC DIAGRAM – BD (MD) Section (1/3) – • See page 77 for Waveforms. • See page 82 for IC Block Diagrams.
HCD-MD1EX
(Page 51) (Page 51)
– 49 – – 50 –
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : STOP
( ) : MD PLAY
[ ] : MD REC
: Impossible to measure
∗
(Page 52) (Page 52)
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque ! sont
critiques pour la sécurité. Ne les remplacer que
par une piéce portant le numéro spécifié.
HCD-MD1EX
7-10. SCHEMATIC DIAGRAM – BD (MD) Section (2/3) – • See page 77 for Waveforms. • See page 82 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : STOP
( ) : MD PLAY
[ ] : MD REC
: Impossible to measure
∗
(Page 49)
(Page 50)
(Page 50)(Page 49)
(Page
59)
(Page 53)
(Page 53)
(Page 54)
– 51 – – 52 –
7-11. SCHEMATIC DIAGRAM – BD (MD) Section (3/3) – • See page 77 for Waveforms. • See page 82 for IC Block Diagrams.
HCD-MD1EX
(Page 51)
(Page 51)
(Page 52)
(Page 76)
– 53 – – 54 –
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : STOP
( ) : MD PLAY
[ ] : MD REC
: Impossible to measure
∗
HCD-MD1EX
7-14. SCHEMATIC DIAGRAM – MAIN Section (1/2) – • See page 78 for Waveforms. • See page 84 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
: Impossible to measure
∗
(Page 46)
(Page 51)
(Page 61)
(Page 76)
(Page 76)
(Page 61)
– 59 – – 60 –
7-15. SCHEMATIC DIAGRAM – MAIN Section (2/2) – • See page 78 for Waveforms. • See page 84 for IC Block Diagrams.
HCD-MD1EX
(Page
60)
(Page 60)
(Page 74)
– 61 – – 62 –
(Page 65)
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
〈〈 〉〉 : AM
[ ] : CD PLAY
( ) : MD PLAY
7-17. SCHEMATIC DIAGRAM – PANEL Section – • See page 85 for IC Block Diagrams.
HCD-MD1EX
(Page 62)
(Page 70)
– 65 – – 66 –
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
7-19. SCHEMATIC DIAGRAM – AMP/TRANSFORMER Section –
(Page 74)
HCD-MD1EX
(Page 73)
(Page 74)
(Page 66)
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
– 69 – – 70 –
Les composants identifiés par une marque ! sont
critiques pour la sécurité. Ne les remplacer que
par une piéce portant le numéro spécifié.
7-21. SCHEMATIC DIAGRAM – POWER Section –
HCD-MD1EX
(Page 62)
(Page 69)
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
[ ] : CD PLAY
( ) : MD PLAY
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
– 73 – – 74 –
(Page 69)
(Page 69)
Les composants identifiés par une marque ! sont
critiques pour la sécurité. Ne les remplacer que
par une piéce portant le numéro spécifié.
7-23. SCHEMA TIC DIAGRAM – MOTOR/SW Section –
(Page 60)
(Page 60)
(Page 54)
– 76 –
• Waveforms
Approx.
1.2
±
0.2 Vp-p
4.6 Vp-p
1.5 µsec
– BD (CD) Board –
– BD (MD) Board –
1 IC101 #¡ (RFO) (CD Play Mode)
500 mV/DIV, 500 ns/DIV
2 IC101 $¢ (TEI) (CD Play Mode)
50 mV/DIV, 1 µs/DIV
3 IC101 2 (FEI) (CD Play Mode)
50 mV/DIV, 1 µs/DIV
1.3 ± 0.3 Vp-p
Approx.
100 mVp-p
6 IC103 @∞ (XPCK)
14 ns
7 IC103 @™ (BCLK)
474 ns
8 IC103 @º (LRCK)
5.3 Vp-p
5 Vp-p
1 IC101 1, 2 (I, J) (MD Play Mode)
Approx.
500 mVp-p
2 IC101 4 (A) (MD Play Mode)
Approx.
200 mVp-p
3 IC101 8, 9 (E, F) (MD Play Mode)
4 IC103 3 (MDP) (CD Play Mode)
7.6
µ
s
5 IC103 @• (RFCK)
Approx.
150 mVp-p
2.6 Vp-p
5.1 Vp-p
44.1 kHz
9 IC104 6 (XTO)
16.9344 MHz
5.1 Vp-p
4.6 Vp-p
Approx.
150 mVp-p
4 IC101 #• (RF) (MD Play Mode)
5 IC152 #™ (CAPA–) (MD Play Mode)
7.35 kHz
– 77 –
– MAIN Board –
6 IC152 #¡ (CAPA+) (MD Play Mode)
4.6 Vp-p
1.5
µ
sec
7 IC121 (º (FS4)
3.4 Vp-p
5.7 µsec
8 IC121 !¶ (OSCO)
!¡ IC121 @¶ (FS256)
11.2896 MHz
!™ IC316 !£ (XOUT)
7 MHz
3.4 Vp-p
3.3 Vp-p
1 IC707 !¡ (X1)
3.8 Vp-p
5 MHz
2 IC707 !¢ (XT1)
2.4 Vp-p
32 kHz
3 IC710 !£
22.5792 MHz
9 IC121 @∞ (LRCK)
44.1 kHz
!º IC121 @§ (XBCK)
3.1 Vp-p
3.4 Vp-p
3.5 Vp-p
4.332 MHz
– PANEL Board –
1 IC901 @º (XOUT)
2.6
µ
s
2 IC901 @¡ (XIN)
2.7 Vp-p
4.7 Vp-p
0.8 Vp-p
2.8224 MHz
– 78 –
2.6
µ
s
• IC Block Diagrams
– BD (CD) Board –
IC101 CXA1782BQ
PHD2
36
35 34
PHD1
PHD
–
RF IV AMP1
LD
33
+
–
+
APC
–
+
RF M
32
–
–
+
+
–
FOK
+
LEVELS
RF O
31
–
+
–
+
MIRR
RF I
30
–
+
+
–
+
–
29CP28
CB
DFCT
CC126CC225FOK
27
–
+
24 SENS
+
–
IIL
TTL
23 C. OUT
–
+
RF IV AMP2
37FE BIAS
+
–
38F
39E
40EI
BAL1
41VEE
42TEO
TOG1
43LPFI
44TEI
45ATSC
46TZC
47TDFCT
48VC
–
+
F IV AMP
–
+
E IV AMP
BAL2
BAL3
TOG2
TOG3
• WINDOW COMP
ATSC
–
+
FE AMP
TE AMP
+
–
DFCT
TTL
IIL
FZC COMP
TZC COMP
DFCT
FS4
–
+
• IIL DATA RESISTOR • INPUT SHIFT RESISTOR
TOG1-3 FS1-4 TG1-2 TM1-7 PS1-4
BAL1-3
–
–
+
+
–
+
HPF COMP LPF COMP
–
+
+
–
• FCS PHASE
COMPENSATION
TM1
FS2
+
–
• ADDRESS DECODER
• OUTPUT DECODER
• TRACKING
• PHASE
COMPENSATION
TG1
FS1
• ISET
TM6
TM5
TM4
TM3
TM7
TG2
• F SET
TM2
22 XRST
TTL
21 DATA
20 XLT
IIL
19 CLK
18 VCC
17 ISET
–
16 SL 0
+
15 SL M
14 SL P
+
1312TA O
–
3
2
1
FEI
FEO
FDFCT
4
FGD
FLB
FE O
FE M
SRCH
TGU
TG2
FSET
TA M
11
10
9
8
7
6
5
– 79 –
IC102 BA6397FP
1
2
3
4
7
8
9
10
11
12
13
14
28
27
26
24
22
21
20
19
18
17
DRIVE
BUFFER
DRIVE
BUFFER
LEVEL
SHIFT
LEVEL
SHIFT
THERMAL
SHUT DOWN
REGULATOR
DRIVER MUTE
LEVEL
SHIFT
DRIVE
BUFFER
DRIVE
BUFFER
DRIVE
BUFFER
DRIVE
BUFFER
LEVEL
SHIFT
DRIVE
BUFFER
DRIVE
BUFFER
15
16
23
25
5
6
OUT1A
OUT1B
IN1A
IN1B
TR-B
REG 0
XRST
GND
IN2A
IN2B
OUT2A
OUT2B
GND
OP-OUT
GND
OUT4A
OUT4B
IN4A
IN4B
VC
V
CC
V
CC
V
CC
V
CC
IN3B
IN3A
OUT3B
OUT3A
OP+
OP–
IC103 CXD2507AQ
ASYMMETRY
CORRECTOR
14
DIGITAL
PLL
5
SERVO AUTO
SEQUENCER
INTERFACE
FOK
MON
MDP
MDS
LOCK
TEST
FILO
FILI
PCO
VSS
AVSS
CLTV
AVDD
BIAS
ASYI
ASYO
ASYE
WDCK
RF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
XLON
CPU
LRCK
SPOD
PCMD
SPOC
SPOB
SPOA
5
DEMODULATOR
16K
RAM
BCLK
XUGF
GTOP
DD
CLKO
V
SUB CODE
PROCESSOR
EFM
3
ERROR
CORRECTOR
3
DD
V
XPCK
XLTO
DATO
CNIN
4
D/A
INTERFACE
GFS
RFCK
CZPO
SEIN
DIGITAL
CLV
6
XROF
CLOK
52535455565758596061626364
32313029282726252423222120
MNT3
XLAT
DIGITAL
MNT1
OUT
CLOCK
GENERATOR
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
DATA
XRST
SENS
MUTE
SQCK
SQSO
EXCK
SBSO
SCOR
V
WFCK
EMPH
DOUT
C4M
FSTT
XTSL
XTAO
XTAI
MNTO
SS
– 80 –
IC104 PCM1710U-B
LRCIN
DIN
BCKIN
CLKO
XTO
DGND
V
VCC2R
GND2R
EXT1R
EXT2R
VOUTR
GND1
XTI
1
2
3
4
5
6
7
8
DD
9
10
11
12
13
14
INPUT
INTERFACE DIGITAL
TIMING
CONTROL
5-LEVEL DAC
RIGHT
LOW-PASS FILTER
RIGHT
3-STAGE AMP
RIGHT
FILTER
NOISE
SHAPER
MODE
CONTROL
5-LEVEL DAC
LEFT
LOW-PASS FILTER
LEFT
3-STAGE AMP
LEFT
28
27
26
25
24
23
22
21
20
19
18
17
16
15
ML/DSD
MC/DM2
MD/DM1
MUTE
MODE
CKSL
DGND
DD
V
VCC2L
GND2L
EXT1L
EXT2L
VOUTL
CC
1
V
– 81 –
– BD (MD) Board –
IC101 CXA2523AR
MORFO47MORFI46RFO45OPN
48
–
+
RFA1
+
–
1I
2J
CVB
GSW
+
–
+
–
+
–
+
–
+
–
+
–
+
–
IV
3VC
4A
IVR
5B
IVR
6C
IVR
7D
IVR
8E
IVR
9F
IVR
RFA2
–
HLPT
1
–
–
2
–
OFST
–
1
–
2
–
GRV
GRVA
AA
BB
CC
DD
+
EE
–
EBAL
+
FF
–
FBAL
OPO43ADDC42COMPP41COMPO40AGCI39RF AGC38RF37PEAK
44
USROP
–1
–2
–2
–1
PBSW
–
–
–
–
+
+
–
–
–
–
+
+
EE'
EFB TESW
ESW
FF'
RFA3
PTGR
ABCDA
FEA
ATA
–
+
–
+
BPF3T
BPF22
WBL
WBL
RF AGC EQ
+
–
USRC
PEAK
BOTTOM
WBL
ADIP
PTGR
PEAK3T
AGC
WBL
EQ
3T
3T WBL
P-P
PBH
3T
DET
–1
–2
–1
–2
DET
TEMP
EQ
AUX
SW
BPFC
SEA
TEA
VI CONV
TG
TG
36
BOTM
35
ABCD
34
FE
33
AUX
32 ADFG
31 ADAGC
30 ADIN
29 ADFM
28 SE
27 CSLED
26 TE
25 WBLADJ
15
AUXSW
TEMPR
COMMAND
SCRI - PARA
DECODE
17
16
SCLK
SWDT
BGR
VREF
24
23
22
21
20
19
18
XLAT
XSTBY
F0CNT
VREF
EQADJ
3TADJ
VCC
10PD
11APC
12APCREF
+
–
+
–
14
13
GND
TEMPI
– 82 –
IC121 CXD2652AR
EFMO
DVSS
TEST3
TEST2
99 98 97 96 95 94 93
SUBCODE
CLOCK
MNT0
MNT1
MNT2
MNT3
SWDT
SCLK
XLAT
SRDT
SENS
XRST
SQSY
DQSY
RECP
XINT
OSCI
OSCO
XTSL
DVSS
DOUT
NC
DIN
100
1
2
MONITOR
CONTROL
3
4
5
6
CPU I/F
7
8
9
10
11
PROCESSOR
12
13
14
15
TX
16
17
GENERATOR
18
19
20
21
22
TEST1
EACH
BLOCK
EACH
BLOCK
FGIN
SPINDLE
SERVO
DECODER
EACH
BLOCK
SPFD
ADIP
SPRD
DIGITAL
AUDIO
SFDR91SRDR90FS489FRDR88FFDR87DVDD86TFDR85TRDR84LDDR83APCREF82DTRF81CKRF80XLRF79F0CNT78ADFG77APC76DCHG
92
PWM
SHOCK RESISTANT
MEMORY CONTROLLER
SAMPLING
I/F
RATE
CONVERTER
GENERATOR
SERVO
DSP
CONVERTER
AUTO
SEQUENCER
A/D
EFM/ACIRC
ANALOG
MUX
DECODER
ENCODER/
COMP
PLL
75
AUX2
74
TE
73
SE
72
AVSS
71
ADRB
70
ADRT
69
AVDD
68
ADIO
67
VC
66
AUX1
65
FE
64
ABCD
63
BOTM
62
PEAK
61
CLTV
60
FILO
59
FILI
58
PCO
57
PDO
56
AVSS
55
RFI
54
BIAS
53
AVDD
52
ASYI
51
ASYO
23
ADDT
DADT
LRCK
24
25
28
26
27
XBCK
DVDD
FS256
ATRAC
ENCODER/DECODER
ADDRESS/DATA BUS A00 - A11, D0 - D3
40
39
A1138A0837A0736A0635A0534A0433A1032A0031A0130A0229A03
DVSS
43
42
41
A09
XOE
XCAS
IC152 BH6511FS-E2
CAPA–
CAPA+
IN2R
IN2F
VM2
OUT2F
PGND2
OUT2R
VM12
OUT1R
PGND1
OUT1F
VM1
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
CHARGE
PUMP.
OSC
INTERFACE
INTERFACE
AMP
AMP
AMP
AMP
AMP
PREDRIVEPREDRIVE
PREDRIVEPREDRIVE
AMPAMPAMP
44
XWE
XRAS
IN1F
INTERFACE
INTERFACE
IN1R
V
PSB
50
49D348D247D046D145
MVCI
DD
V
DD
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
VG
GND
IN4R
IN4F
VM4
OUT4F
PGND4
OUT4R
VM34
OUT3R
PGND3
OUT3F
VM3
IN3F
IN3R
– 83 –
PSB
IC153 LB1830M-S-TE-L IC201 AK4520A-VF-E2
IN2 IN1 VM VREF VCONT
10 9 8 7 6
VREF
VCOM
AOUTR
AOUTL
CMODE
PWAD
PWDA
DGNDVDTST1
TST2
TST3
DEM1
16 15171819202122232425262728
DEM0
MCLK
LOGIC
PREDRIVER
2 3
1
VCC OUT2 GND OUT1 VS
5
4
– MAIN Board –
IC702 LB1641
T.S.D O.C.P
MOTOR
DRIVE
MOTOR
DRIVE
1
VREFH
2 3
VREFL
LPF
LPF
5 6 7 8 9 10 14131211
4
AINL+
AINR–
AINR+
MODULATOR
MODULATOR
MODULATOR
MODULATOR
AINL–
∆Σ
∆Σ
∆Σ
∆Σ
VA
INTERPOLATOR
INTERPOLATOR
COMMON
VOLTAGE
DECIMATION
FILTER
DECIMATION
FILTER
8×
8×
AGND
IC706 M62016L
COM
+
–
COM
+
–
SERIAL I/O
INTERFACE
DIF1
DIF0
LRCK
INTERRUPT SIGNAL
GENERATING BLOCK
RESET SIGNAL
GENERATING BLOCK
CLOCK
DIVIDER
SCLK
SDTI
SDTO
FWD/REV/STOP
CONTROL LOGIC
2 3
1
GND
DRIVE
MOTOR
NOISE
FILTER
5 6 7 8 9 10
4
VCC 1
FWD.IN
REV.IN
CLAMP
VCC 2
NOISE
FILTER
DRIVE
MOTOR
GND INT RESET CD VCC
2 3
1
4
5
– 84 –
IC710 BU1922-E2 (AEP, UK)
D
RDCL
QUAL
TS7
QUALITY BIT
GENERATOR
DEFFERENTIAL
DECODER
RDDA
FILTER
DDD
V
CLOCK REGENERATION
DDA
V
OSCO
141516 13 12 11 10 9
OSCILLATOR
AND
DIVIDER
BIPHASE
SYMBOL
DECODER
321 4 5 6 7 8
Vref
OSCI
RECONSTRUCTION
MUX
SSD
V
57kHz
BANDPASS
(8th ORDER)
CONTAS LOOP
VARIABLE AND
FIXED DIVIDER
AND SYNC
REFERENCE
VOLTAGE
SSA
V
TEST
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
ANTI-
ALIASING
FILTER
CLOCKED
COMPARATOR
VP1
CIN
TSTL
SCOUT
– PANEL Board –
IC901 M66004M8FP
1
DIG11
|
|
12
DIG0
13
RES
14
CLK
DATA
V
CC
XOUT
XIN
V
SEG35
|
SEG27
CS
15
16
17
P1
18
P0
19
1
20
21
22
SS
23
|
31
32
VP
SERIAL
RECEIVE
CIRCUIT
OUTPUT
PORT
(2BIT)
CLOCK
GENERATOR
CIRCUIT
DECODER
(35BIT x 16)
DIGITAL
OUTPUT
CIRCUIT
INDICATION
CONTROLLER
INDICATION
CONTROL
RESISTOR
CODE/COMMAND
CONTROL
CIRCUIT
RAM WRITE
CODE
WRITE
INDICATION
CODE
RESISTOR
(8BIT x 16)
SEGMENT OUTPUT CIRCUIT
CODE SELECT
DECODER
(35BIT x 16)
64
DIG12
|
|
61
DIG15
CC
2
V
60
59
SEG0
|
|
33
SEG26
– 85 –
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