JVC GRDV-2000 Schematic
SECTION 4
24
C331
11/10
22201816
WF25
C329
0.1/50
C330
0.1/50
R344
47K
R343
18K
R345
10K
R346
15K
Measurement point
Waveform number
12 3
2.5
(5.0)
1.8
PB and REC modes
(Voltage of PB and REC modes
are the same)
PB mode
REC mode
CHARTS AND DIAGRAMS
NOTES OF SCHEMATIC DIAGRAM
Safety precautions
The Components identified by the symbol are
critical for safety. For continued safety, replace safety
critical components only with manufacturer's recommended parts.
1. Units of components on the schematic diagram
Unless otherwise specified.
1) All resistance values are in ohm, 1/6 W, 1/8 W (refer to
parts list).
Chip resistors are 1/16 W.
K or k: k
2) All capacitance values are in µF, (P: PF).
3) All inductance values are in µH, (m: mH).
4) All diodes are 1SS133, MA165 or 1N4148M (refer to parts
list).
2. Indications of control voltage
AUX : Active at high
AUX or AUX(L) : Active at low
3. Interpreting Connector indications
(1000 ), M: M (1000k )
1
2
Removable connector
3
1
2
Wire soldered directly on board
3
4) Indication on schematic diagram
Voltage Indications for REC and PB mode on the schematic diagram are as shown below.
Note: If the voltages are not indicated on the schematic
diagram, refer to the voltage charts.
5. Waveform measurement
1) Video circuits
REC : Colour bar signal in SP mode, normal VHS mode
PB : Alignment tape, colour bar SP mode, normal VHS
mode
2) Audio circuits
REC : 1KHz, –8 dBs sine wave signal in SP mode, normal
VHS mode
PB : REC then playback it
3) Movie Camera circuits
Measured using a correctly illuminated gray scale or colour
bar test chatrs in the E-E mode
4) Indication on schematic diagram
Waveform indications on the schematic diagram are as
shown below.
1
2
3
2
4
4. Voltage measurement
1) Video circuits
REC : Colour bar signal in SP mode, normal VHS mode
PB : Alignment tape, colour bar SP mode, normal VHS
mode
— : Unmeasurable or unnecessary to measure
2) Audio circuits
REC : 1KHz, –8 dBs sine wave signal in SP mode, Nor-
mal VHS mode
PB : REC then playback it
3) Movie Camera circuits
Measured using a correctly illuminated gray scale or colour
bar test charts in the E-E mode
Non-removable Board connector
1
Board to Board
3
Connected pattern on board
The arrows indicate signal path
5) Waveform indications
Waveform number
WF25
REC/PB 1.2 Vp-p
50 mV/2 msec/DIV
Oscilloscope Volts and Time/Division, Probe 10 : 1
Mode : REC or PB modes
Waveform name or
measurement point
ALC OUT
Level : 1.2 Vp-p
4-1
6. Signal path Symbols
The arrows indicate the signal path as follows.
Playback signal path
Playback and recording signal path
Recording signal path
(including E-E signal path)
Capstan servo path
CIRCUIT BOARD NOTES
1. Foil and Component sides
1) Foil side (B side) :
Parts on the foil side seen from foil face (pattern face)
are indicated.
2) Component side (A side) :
Parts on the component side seen from component face
(parts face) indicated.
Drum servo path
(Example)
R-Y
Playback R-Y signal path
Y
Recording Y signal path
7. Indication of the parts for adjustments
The parts for the adjustments are surrounded with the circle as
shown below.
8. Indication of the parts not mounted on the circuit board
“OPEN” is indicated by the parts not mounted on the circuit
board.
R216
OPEN
2. Parts location guides
Parts location are indicated by guide scale on the circuit board.
REF No. LOCATION
Category: IC
Horizontal “A” zone
Vertical “6” zone
(A : Component side)
(D : Discrete component)
B : Foil side
C : Chip component
IC
IC101 B C 6A
Note:
For general information in service manual, please refer
to the Service Manual of GENERAL INFORMATION Edition 4 No. 82054D (January 1994).
4-2
4.1
BOARD INTERCONNECTIONS
YTU94074-8
YTU94077-8
SUB OPE
UNIT
(
Page 4-49
NOTE): The number of patch cords
)
are indicated by interconnected.
YTU94129A-39
VBLOCK
V3A
V3B
V2A
V2B
(
)
YTU94128B-2
1516
VSUB
NC
VL
Page 4-48
5
4
NC
RGT
B
R
G
PSIG
HCK1
HCK2
Cext/Rext
TEST
REF
HST
WIDE
CS
VSSG
HVDD
VSS
VVDD
DWN
EN
VCK
VST
COM
NC
YTU94074-22
YTU94077-22
INFO-SHOE
(
VIDEO LIGHT/FLASH/MIC
FRONT FPC UNIT
(
)
Page 4-50
)
YTU94074-8
YTU94077-8
)
Page 4-43
(
CN109
(
Page 4-39
)
3
YTU94074-12
YTU94077-12
(
Page 4-47
MENU SW UNIT
(
)
Page 4-49
ZOOM OPE.UNIT
(
)
Page 4-49
YTU94074-20
YTU94077-20
)
YTU94074-13
YTU94077-13
PB VCO
VPPC 5V
MAIN VCO
JIG CONN
)(
Page 4-35
(
)
Page 4-37
REEL VCC
J201
SHOE DET
SHOE AD
SHOE PWM
(
Page 4-41
)
MAIN IF
(
Page 4-5,4-7
V OUT
(
Page 4-15
)
)
(
Page 4-9
ANA IN
(
Page 4-17
)
)
CPU
MDS CPU
(
Page 4-11
TG/VDR
(
Page 4-19
)
)
DV MAIN
(
Page 4-13
CDS/AD
(
Page 4-21
)
)
2
BATT. TERM.
&
MULTI PIN CONN.
USBSENSE
USB DP
USB DN
JLIP TX
JLIP RX
REM OUT
1
GND
GND
C OUT
S DET
YIN
(
Page 4-27
DSP
(
Page 4-23
)(
)
Page 4-29
ABCD EFGH
OP DRIVE
(
Page 4-25
)(
)
Page 4-31
USBDOWN
)
4-3 4-4
DSC IF
(
Page 4-33
YTU94074-24
YTU94077-24
J303
J302
(
Page 4-45
)
J301
MMC/SD
)
YTU94074-20
YTU94077-20
POWER
OPE.UNIT
(
Page 4-50
)
y10156001a rev0
4.2 MAIN IF SCHEMATIC DIAGRAM(1/2
TO AUDIO CN201
)
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
TO VF UNIT
TO JACK CN301
5
DV MAIN
MAIN(MAIN IF
TO REG CN601
EMZ6.8N
EMZ6.8N
EMZ6.8N
)
TO
MONITOR CN7501
,
DECK OPE. CN2431
EMZ6.8N
TO CCD
TO CCD
TG/VDR
CDS/AD
CN109
SHUTTER
MDA
CN104
4
TG/VDR
TG/VDR
TG/VDR
TO OP BLOCK
VOUT
CN112
OP DRIVE
CN108
REG CON
MSD CPU
,
3
TO OP BLOCK
OP BLOCK
TO EJECT
MSD CPU
MSD CPU
MAIN
DV
,
DV MAIN
CN107
MSD CPU
DV MAIN
2
TO MDA CN401
CN109
CN109
DV MAIN
1
TG/VDR
CPU
REG CON
CN107
TO PRE/REC CN401
CPU
CN109
MSD CPU
CN109
MSD CPU
DSP
DV MAIN
DV MAIN
TG/VDR
TG/VDR
CN112
,
MSD CPU
MSD CPU
DV MAIN
MSD CPU
DV MAIN
MSD CPU
MSD CPU
DV MAIN
NO WEAR
TO DSC IF CN8401
4-5 4-6
TO JIG CONN
y10157001a rev0
HGFEDCBA
4.3 MAIN IF SCHEMATIC DIAGRAM(2/2
)
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
MAIN(MAIN IF
)
5
)
TO MAIN IF(1/2
CN103
PS VCC
TO MAIN IF(1/2
CN109
)
TO MAIN IF(1/2
CN109
)
4
TO CPU
TO CPU
TO MAIN IF(1/2
CN109
TO MAIN IF(1/2
CN111
TO CPU
TO MAIN IF(1/2)CN107
3
TO CPU
TO CPU
MAIN IF(1/2)S1002
)
)
,
TO CPU
TO MAIN IF(1/2)CN109
TO CPU
)
M OUT1
)
M OUT2
TO MAIN IF(1/2
CN112
TO MAIN IF(1/2
CN109
2
TO CPU
TO CPU
TO MAIN IF(1/2
CN107,CN109
)
1
NO WEAR
ABCD EFGH
4-7 4-8
y10157001a reV0
5
TO MAIN IF(1/2)CN113
TO MAIN IF(1/2)CN108
4.4 CPU SCHEMATIC DIAGRAM
,
TO MAIN IF(2/2
REG CON
TO MAIN IF(1/2
CN109
TO MAIN IF(1/2
CN112
)
,
)
)
)
)
)
)
MAIN(CPU
TO MAIN IF(2/2
REG CON
TO MSD CPU
MAIN IF(1/2)CN109
MAIN IF(2/2)REG CON
TO MAIN IF(1/2
CN113
TO MAIN IF(1/2
CN113
TO MAIN IF(1/2
CN109
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
)
TO TG/VDR
TO
MAIN IF(2/2
JLIP IF
,
,
)
TO MAIN IF(1/2)CN107
C
MAIN IF(2/2)JILP IF
MSD CPU
TOVOUT
TO DSP
TO CDS/AD
4
TO MAIN IF(1/2
CN111
TO MAIN IF(1/2)CN113
3
TO MAIN IF(1/2)CN108
TO MAIN IF(1/2)CN110
TO MAIN IF(1/2
CN105
TO MAIN IF(2/2)PS DRIV
TO MAIN IF(1/2)CN112
TO DSP,MAIN IF(1/2)CN105
TO MAIN IF(1/2)CN105
2
TO MAIN IF(1/2)CN105
TO MAIN IF(2/2
REG CON
TO MSD CPU
TO DSP
TO MAIN IF(2/2
SHUTTER MDA
TO MAIN IF(1/2
CN112
TO MAIN IF(1/2
,
CN105
DSP
TO MAIN IF(1/2
,
CN105
DSP
TO MAIN IF(1/2
CN105
)
)
)
)
)
TO ANA IN
)
)
)
MN1030F04KYB-N1
TO MAIN IF(1/2
CN105
C
C
)
TO MAIN IF(1/2)CN111
TO MSD CPU
TO
MAIN IF(1/2
CN107
)
)
)
)
)
)
)
)
)
TO MAIN IF(1/2
CN105
TO MAIN IF(1/2
CN112
TO MAIN IF(1/2
CN111
TO MAIN IF(1/2)CN109
TO MAIN IF(1/2)CN112
TO MAIN IF(1/2
CN108
TO MAIN IF(1/2
CN112
TO DSP,MAIN IF(1/2)CN112
TO MAIN IF(1/2
CN112
TO MAIN IF(1/2)CN108,CN112
TO MAIN IF(1/2)CN108
TO MAIN IF(1/2)CN108,CN112
TO MAIN IF(1/2
CN108
TO MAIN IF(1/2
CN109
TO MAIN IF(1/2
S1002
)
1
TO OP DRIVE
TO MAIN IF(1/2
CN105
TO DSP
TO ANA IN
DSP
)
,
NO WEAR
4-9 4-10
MB90097PFV139
y10158001a rev0
TO MAIN IF(1/2
CN108
TOVOUT
TO ANA IN
)
HGFEDCBA
4.5 MSD CPU SCHEMATIC DIAGRAM
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
TO MAIN IF(1/2
CN109
5
TO DSP
TO DV MAIN
TO MAIN IF(1/2
CN106,CN107
DV MAIN
TO DV MAIN
,
)
)
MAIN(MSD CPU
4
)
TO MAIN IF(1/2
CN109
TO CPU
)
TO MAIN IF(1/2
CN106
TO MAIN IF(1/2
CN106
)
)
MN103016KJD
)
TO MAIN IF(1/2
CN106
)
3
TO DV MAIN
TO CPU
TO MAIN IF(1/2
CN106,CN107
2
TO MAIN IF(1/2
CN109
TO MAIN IF(1/2
CN106
1
)
330
)
47k
330
TO DSP
TO MAIN IF(1/2
CN107
TO MAIN IF(1/2
S1002
)
)
NO WEAR
ABCD EFGH
4-11 4-12
y10159001a rev0
4.6 DV MAIN SCHEMATIC DIAGRAM
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
TO DSP,MAIN IF(1/2
CN105,CN107
TO MAIN IF(1/2)CN107
TO DSP,MAIN IF(1/2
CN105,CN107
TO DSP
TO DSP
)
)
When replacing the parts,refer to the Parts List.
MAIN(DV MAIN
)
5
TO MSD CPU
TO DSP
TO DSP,MSD CPU
)
TO MAIN IF(1/2
CN109
TO DSP
4
)
TO MAIN IF(1/2
CN112
3
)
TO MAIN IF(1/2
CN107
2
TO DSP
TO MAIN IF(1/2
CN106,CN107
TO MAIN IF(1/2
CN106
TO MAIN IF(1/2
CN106
)
)
TO MSD CPU
)
1
TO MSD CPU
,
TO MSD CPU
MAIN IF(1/2)CN107
TO MSD CPU
NO WEAR
4-13 4-14
y10160001a rev0
HGFEDCBA
4.7 V OUT SCHEMATIC DIAGRAM
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
MAIN(V OUT
)
5
C
TO
MAIN IF(1/2
CN109
TO
MAIN IF(1/2)CN109
ANA IN,DSP
4
TO DSP
)
C
,
C
C
TO DSP
3
C
Y
Y
TO CPU
2
TO CPU
C
Y
Y
C
y30106001a rev1
C
TO MAIN IF(1/2)CN109
Y
TO ANA IN
TO
MAIN IF(1/2)CN109
ANA IN
TO
MAIN IF(1/2)CN111
ANA IN
,
,
1
ABCD EFGH
4-15 4-16
4.8 ANA IN SCHEMATIC DIAGRAM
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
5
TO DSP
R-Y
B-Y
C
Y
Y
MAIN(ANA IN
)
TO CPU
B-Y
C
R-Y
4
TO V OUT
NC VDD
IN
GND OUT
Y
Y
C
Y
TO CPU
3
Y
C
Y
C
Y
C
Y
Y
2
1
TO
MAIN IF(1/2
CN109
)
NO WEAR
4-17 4-18
C
Y
C
C
C
C
Y
C
C
Y
Y
Y
Y
Y
Y
C
C
C
C
Y
Y
Y
Y
C
C
C
C
TO DSP
TO DSP,CPU
TO DSP
y20132001a rev0
HGFEDCBA
4.9 TG/VDR SCHEMATIC DIAGRAM
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
TO MAIN IF(1/2
MAIN(TG/VDR
)
5
TO DSP
CN109
TO MAIN IF(1/2)CN109
TO CDS/AD
TO MAIN IF(1/2
CN109
)
)
4
TO MAIN IF(1/2
CN105
)
TO
MAIN IF(1/2
3
CN102
)
TO OP DRIVE
TO CDS/AD
2
1
NO WEAR
ABCD EFGH
4-19 4-20
y20102001a rev1
TO CPU
4.10 CDS/AD SCHEMATIC DIAGRAM
NOTES :
5
MAIN(CDS/AD
)
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
TO MAIN IF(1/2
CN109
)
4
TO TG/VDR
3
TO MAIN IF(1/2
CN101
)
TO DSP
2
TO CPU
1
NO WEAR
4-21 4-22
y20104001a rev1
HGFEDCBA
4.11 DSP SCHEMATIC DIAGRAM
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
TO ANA IN
5
)
TO MAIN IF(1/2
,
CN105
TG/VDR
TO TG/VDR
)
TO MAIN IF(1/2
,
CN105
TG/VDR
)
TO MAIN IF(1/2
,
CN105
,
CPU,MSD CPU
TG/VDR,OP DRIVE
4
TO CDS/AD
TO CPU
MAIN(DSP
)
Y
Y
C
C
CY
C
C
Y
Y
CY
Y
Y
Y
Y
C
C
C
C
Y
Y
Y
Y
C
C
C
C
YC
TO MAIN IF(1/2
CN105
TO DV MAIN
)
TO ANA IN
TO MSD CPU
DV MAIN
,
3
Y
R-Y
Y
TO OP DRIVE
TO ANA IN
C
B-Y
TO V OUT
Y
C
2
1
TO MAIN IF(1/2
CN105
,
TO CPU
MAIN IF(1/2)CN105
TO MAIN IF(1/2)CN105
,
TO CPU
MAIN IF(1/2)CN105
TO MAIN IF(1/2
CN105
)
TO MAIN IF(1/2
CN108
Y
R-Y
B-Y
)
TO MAIN IF(1/2
CN106
TO MAIN IF(1/2
CN106
)
YC
ABCD EFGH
C
NO WEAR
Y
y10162001a rev0
4-23 4-24
TO MAIN IF(1/2)CN106
DV MAIN
TO DV MAIN
TO MAIN IF(1/2)CN112
)
TO V OUT
)
TO CPU
TO OP DRIVE
TO MAIN IF(1/2
CN109
TO DV MAIN
TO MAIN IF(1/2)CN105
,
)
4.12 OP DRIVE SCHEMATIC DIAGRAM
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
MAIN(OP DRIVE
TO DSP
)
5
TO CPU
TO MAIN IF(1/2
CN104
TO CPU
4
TO DSP
TO MAIN IF(1/2
CN109
)
TC7W66FK
)
3
TO CPU
TO TG/VDR
TO MAIN IF(1/2)CN109
2
TO MAIN IF(1/2)CN104
TO DSP
TO MAIN IF(1/2
CN109
TO DSP
TO CPU
TO CPU
)
TO MAIN IF(1/2
CN104
TO MAIN IF(1/2
CN104
TO MAIN IF(1/2
CN104
TO MAIN IF(1/2
CN104
)
)
)
)
1
NO WEAR
4-25 4-26
y20107001a rev1
HGFEDCBA
DSC SCHEMATIC DIAGRAM4.13
NOTES :
For the destination of each signal and further line connections that are cut off from
this diagram,refer to "4.1 BOARD INTERCONNECTIONS".
The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts,refer to the Parts List.
DSC(DSC
)
5
TO DSC IF
CN8401
TO USB
IC8004
MBV800TA10PTA17
TO USB
TO DSC IF
CN8402
4
TO
P SHIFT
TO USB
TO DSC IF
CN8401
3
TO DSC IF
TO DSC IF
CN8402
TO USB
TO DSC IF
CN8401
CN8401
TO P SHIFT
TO DSC IF
CN8402
TO DSC IF
CN8401
TO DSC IF CN8401
TO P SHIFT
TO DSC IF CN8401
TO P SHIFT
TO DSC IF CN8401
TO USB
2
1
TO P SHIFT
TO DSC IF
CN8401
TO DSC IF
CN8401
TO
DSC IF
CN8402
TO USB
TO DSC IF
CN8401
Y
C
Y
C
NO WEAR
ABCD EFGH
4-27 4-28
y10163001a rev0
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