Sony PCM-M1 Service Manual ▷ View online
1.
Connect CH-1 of an oscilloscope to TP524 (RF) and CH-2 to TP525 (SWP).
2.
Establish a test mode.
3.
Select and set the test mode code 40 and speed code 1 using the VOLUME
+
(up) key. (
×
1 FWD)
4.
Insert a test tape TY-7915.
5.
Select and set the test mode code 42.
6.
Adjust the phase difference (T) between the SWP signal and the RF signal using the VOLUME
+
(up) and the VOLUME
−
(down) keys
until the specifications as shown is satisfied.
T=1083.5µsec ± 30µsec
7.
Press the LIGHT button to save the data into EEPROM
• Record current adjustment
Note:
The default adjustment value for each specific drum has already been printed on the bar code label as shown.
When you replace the drum with the new replacement drum, peel off the old bar code label from the machine and attach the new bar
code label that is packed with the new replacement drum, to the machine. Then perform the record current adjustment.
When you replace the drum with the new replacement drum, peel off the old bar code label from the machine and attach the new bar
code label that is packed with the new replacement drum, to the machine. Then perform the record current adjustment.
1.
Enter the test mode.
2.
Set the test mode code to 43 using the MODE key. Then press the ENTER key.
3.
Confirm to see that the adjustment target code which is shown on the test mode display, is 0.
When you need to change the adjustment target code, press the RESET/+ key to select the desired adjustment target code No.
When you need to change the adjustment target code, press the RESET/+ key to select the desired adjustment target code No.
4.
Adjust the record current to the default adjustment value shown on the bar code label by pressing the VOLUME (+) or (-) key. Then
press the LIGHT key.
press the LIGHT key.
5.
Repeat the steps 3 and 4 until all adjustment items from the adjustment target code-0 to -3 are complete.
– 25 –
(Fig-5)
Default adjustment value of the adjustment target code-3
Default adjustment value of the adjustment target code-2
Default adjustment value of the adjustment target code-1
Default adjustment value of the adjustment target code-0
Default adjustment value of the adjustment target code-2
Default adjustment value of the adjustment target code-1
Default adjustment value of the adjustment target code-0
Barcode lavel
Holder (cassette)assy
PCM-M1
– 26 –
– 27 –
– 28 –
SECTION 4
DIAGRAM
4-1. BLOCK DIAGRAM — MD SECTION —
4-2. BLOCK DIAGRAM — AUDIO SECTION —
• Signal path
d
:
PB
G
:
REC
– 29 –
– 30 –
R-CH
Q301
R-CH
RIPPLE
FILTER
Q324
MUTE
8
3
2
4
1
8
3
2
1
8
3
2
1
RIPPLE
FILTER
RIPPLE
FILTER
+3.5V
-3.5V
256FS
LR03
XBCK
DASBY
ADSBY
FS0
DADT
ADDT
RIPPLE
FILTER
FILTER
Q307,308
8
3
2
1
8
3
2
1
8
4
RIPPLE
FILTER
IC312
2.5V
REG
Q327,321,322
Q329,330
Q312
MUTE
Q318
UNREG
R-CH
R-CH
HP VOL
CONT
MUTE
POWER
TRRIGGER
1
8
3
6
9
7
16
10
5
13
12
15
14
REDT
90,89
87-82
91-100
2-6
SBPM
11-13
15-19
10-3,25
2,26,1
24,21,23
19
16
57 64
14
94
76
80
75 70
18 49 48 47 46 100 89 84 83 71 93
77
78
27 21 90 17 62 10 9 20 11 16
13 15 7
8
25
26 24
6 91
12 92
22 23
22
23
28
4
2
15
25
22
23
28
4
2
15
25
22
23
28
4
2
15
25
14
13
24
5
27
31
32
6
14
13
24
5
27
31
32
6
1 21 19 20 33 16 17 34 18 26
29 30 11 10 7
8
1 21 19 20 33 16 17
18 26
30 11 10 7
8
34
29
51
1
43
46
52
62
61
65
64
76
50
41
35
37
40
39
77
78
74
75
72
67
57
D0-D7
22
27
18 19
20 21 22 23 24 14 17 16 31 28 27 45
2
3
1
4
6
8
28
8
7
A00-A14
13
3
4
5
20
11
3
3
5
5
9
11
1
8 12
10
LIMIT
CIRCUIT
AGC
CIRCUIT
6
14
13
16
17
24
23
2
5
15
11
12
26
21
7
1
13
3
4
5
12
9
11
20
2
3
1
16
15
11
4
3
2
1
3
2
1
AUDIO BLOCK
MIC/LINE
IN
J301
MIC/LINE
S301
MIC/LINE
S301
MIC/LINE
S301
S304
MIC
ATT
ATT
CN303
CN304
CN304
CN303
(1/2)
RV301
REC VOL
BOARD
L IN
L OUT
Q101
Q303
XVOLCCK
VOLDT
XAGCS
H1
CLK
D
RST
W1
VCC
+3.5V
AGC
IC309
AMP
LINE
IC302
SELECTOR
INPUT
IC310
VRADL
VREF
AMP
LINE
IC303
Q325,326
VEE
Q311,313,323
Q304,305,310
Q302,D102
IC102
Q306
Q309,315,319
STDO
SDTI
DEM0
DEM1
PWAD
PWDA
VA
VD
OL+
SCLK
LRK
MCLK
AINL
VREFL
AD/DA
CONVERTER
IC304
+3.5V
W1
MAIN BLOCK
RST
XVOLCCK
VOLDT
XVOLCS
I/F
EVR
IC306
+3.5V
CLK
D
L0
L1
H1
BUFFER
IC305
Q332
Q331
LINE AMP
IC308
Q320
HP AMP
IC307
+3.5V
MUTE
-3.5V
PW SW
D302
D301
Q328
+3.5V
HP IN
S305
J303
HP OUT
LINE
OUT
J302
+3.5V
HP
RM VCC
RM KEY
RM CSDT
CN302
TO/FROM
MD BLOCK
+3.5V
-3.5V
UNREG
+3.5V
S302
AUTO/LIM/MAN
+3.5V
S303
AVL SW IN
XT2O
IC506
POWTRG
XMPIN
XLINE
XAUSW
LIMSW
AGCAD
XVOLCK
VOLDT
XAGCS
XVOLCS
MVCNT
ADDT
DADT
FS0
FS1
XADSTBY
XDASTBY
VCK
VDT
AGCS
VCS
FS0
FS1
ADSB
DASB
XVOLCK
VOLDT
XAGCS
XVOLCS
FS0
FS1
ADSTBY
DASTBY
DASB
XA
VLS
XBCK
LR03
F256
XLIMSW
XAUT
O
XBCK
LR03
F256
XBCK
LR03
F256
XAUT
O
HPVCNT
A
VCNT
HPMUTE
+3.5V
-3.5V
UNREG
LMUTE
XHPIN
XLPIN
+3.5V
-3.5V
UNREG
SIGNAL
DIGITAL
Q529
CN507
DIGANA
SIRCS
4
3
7
1
5
REMOTE
DIGITAAL
I/O
VDD
IC518
TO
DISPLAY
6
BLOCK
IC513
IC514
TX
RX
HEAD
ACH
DRUM
MOTOR(2/2)
HEAD
BCH
RF
MODULE
RF +3.5V
RF +3.5V
REDT
RFDT
SWP
REPB
PIPC
ATFAGC
PILOT
RFENV
ATFA
ATFB
PCMA
PCMB
CN506
+3.5V
+2.5V
IC519
REG
4
5
2
3
9
8
12
13
14
D/A
CONV.
VDT
VCK
VCO
3
2
4
1
14
12
3
5
3
4
IC511
IC520
LVCC
VVDD
VCO
VCON
IC512
+3.5V
VDD
PDO
PLCO
TX
RX
XT2I
XT3O
XT3I
X502
24.576MHz
X501
22.5792MHz
DIGITAL
I/O
DADO
ADDI
SIGNAL
PROCESSOR
ADDN
ADDT
DADT
XBCK
LR03
F256
RFDT
SWP
REPB
PIPC
DSP
XBCK
LR03
F256
VCC
XWE
WE
OE
SUB I/O
RAM I/F
EXCK
SDSI
SDSO
SBSY
MCLK
DREF
XRST
A
TSY
MINT
SYMN
MUTM
MUTE
MUT
A
EXCK
SDSI
SDSO
EXCK
SDSI
SDSO
SK
SI
SO
CS RST
XOE
IC508
NV RAM
+3.5V
IC507
S RAM
+3.5V
DACS
RFENV
A
TFPL
T
A
T
F
AGC
RFDT
SWP
VCOSB
MCLK
DRFE
SBPM
XSCK1
SO1
SI1
SBSY
XDSPRST
A
TSY
MINTMINT
MUTEM
SYMN
DMUTE
XNVCS
NVRST
XMPIN
XLINE
XAUSW
XLIMON
AGCAD
XVOLCK
VOLDT
XAGCCS
XVOLCS
MVCNT
FS0
FS1
XADSTBY
XDAASTBY
XA
VLS
VCK
VDT
AGCS
VCS
FS0
FS1
ADSB
DASB
XLIMSW
XAUT
O
A
VCNT
XHPVCNT
HPMUTE
LMUTE
XHPIN
XLPIN
SYSCON/
IC505(2/2)
SERVO/
MECHA CONTROL
FS1
IC301
MIC AMP
R308
EXCK
SDSI
SDSO
PLUG IN POWER
DC BUS
TP525
TP524
4-3. IC BLOCK DIAGRAM
15 MCLK
CMODE
LRCK
SCLK
SDTO
SDTI
DIF0
DIF1
TST1
TST2
TST3
DEM0
VA
AGND
DEM1
25
12
12
14
13
9
10
20
19
17
5
7
8
VD
DGND
21
22
6
3
4
1
2
28
26
AINL+
AINL
LPF
Clock
Divider
LPF
AINR+
AINR
VREFH
VREFL
VCOM
AOUTL
27
24
23
16
17
AOUTR
Modulator
Decimation
Filter
Modulator
8x
Interpolator
Serial I/O
Interface
8x
Interpolator
Modulator
Modulator
Common Voltage
Delimation
Filter
PWAD
PWDA
VREF
1
16
15
14
2
PWA
PWR SW
IN A
IN C
IN B
VREF
PRE GND
VREF CONT
RF OUT
Beep IN
RF CONT
VCC
OUT B
OUT C
PWR GND
OUT A
MUTE SW
PW SW
MT SW
PWC
PWB
3
4
13
5
6
7
8
12
11
10
9
RIPPLE
FILTER
BEEP
10K
3K
3K
10K
10K
1K
300K
OVER HEAT
PROTECT
SW
CIRCUIT
3
4
5
2
1
6
CONT 1
V OUT1
V IN
V OUT2
CONT2
GND
REF
VOL
VOL
THERMAL
PROTECT
8
9
10
6
7
5
4
3
2
1
13
12
11
15
16
20
18
19
14
17
P-G
P-G
OUT3N
OUT3P
VS
OUT2
OUT1
VS
Vcc
IB
VB
V CONT
V REF
S-G
VDD
MD0
MD1 MD2
IN1
IN2
BUFFER
BUFFER
BUFFER
MEMORY
MATRIX
512 x 512
ROW
DECODER
I/O GATE
COLUMN
COLUMN
DECODER
I/O
BUFFER
7
6
5
4
3
25
2
26
1
10
9
8
24
21
23
22
27
20
28
14
11
12
13
15
16
17
18
19
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
I/O8
I/O1
CE
WE
OE
A11
A10
A9
A2
A1
A0
A14
A13
A12
A8
A7
A6
A5
A4
A3
GND
Vcc
20k
25
OP2 M IN
GND1
PG A IN
VCC 1
PG CA
PG CF
PG A OUT
PG C IN
PG CP
OP2 P IN
CAP P IN
CAP M IN
CAP A OUT
CAP C IN
R1 IN
R2 IN
GND2
R2 OUT
R1 OUT
CAP C OUT
FG C OUT
PG C OUT
VCC2
PG CR
OP2 OUT
OP1 OUT
OP1 M IN
OP1 P IN
Vref
FG C IN
FG A OUT
FG A IN
24
23
22
21
20
19
18
15
14
13
12
11
10
9
16
17
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
+
–
+
–
+
–
+
–
Vref
200k
CAPSTAN COMPARATOR
REEL
COMPARATOR1
COMPARATOR1
REEL
PG
COMPARATOR
COMPARATOR
COMPARATOR2
80K
AGC
CLAMP
AMP
AMP
PEAK
INTEGRAL
TERMAL
SENSOR
BANDGAP
REFERENCE
6
1
2
5
3
4
V OUT
V IN
CONT.
IC304 AK4520-VF-E2
IC307 LA4800V-TLM
IC520 TK70001
IC515 LB8632V
IC507 CXK5V8257BTM-70LL
IC501 MM1138XQ
IC312 TK11225BMCL
– 31 –
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