Panasonic NV-GX7EG User manual

©2002 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
NV-GX7EG
NV-GX7EGM
NV-GX7B
NV-GX7EN
NV-GX7A
NV-GX7ENT
VOL.2
Q3-MECHANISM
Digital Video Camera/Recorder
ORDER NO.VMD0204026C8

1 INTRODUCTION 3
1.1. INTRODUCTION 3
2 SERVICE CAUTION 4
2.1. HOW TO DISCHARGE THE CAPACITOR ON FRONT
C.B.A. 4
2.2. EEPROM DATA FOR SPARE PARTS OF THE MAIN
C.B.A. 4
2.3. SERVICE EXTENSION CABLES 4
2.4. SERVICE EXTENSION CABLE FOR ALL C.B.A.
INCLUDED IN MODULE UNIT 6
3 BLOCK DIAGRAMS 9
3.1. CAMERA BLOCK DIAGRAM 9
3.2. CONTROL 1 BLOCK DIAGRAM 10
3.3. CONTROL 2 BLOCK DIAGRAM 11
3.4. VIDEO BLOCK DIAGRAM 12
3.5. DSC BLOCK DIAGRAM 13
3.6. MONITOR BLOCK DIAGRAM 14
4 SCHEMATIC DIAGRAMS 15
4.1. SUB (SUB CONNECTION) SCHEMATIC DIAGRAM 15
4.2. SUB (EX INPUT) SCHEMATIC DIAGRAM 17
4.3. SUB (SD AUDIO) SCHEMATIC DIAGRAM 19
4.4. SUB (DSC) SCHEMATIC DIAGRAM 20
4.5. SUB (LENS DRIVE) SCHEMATIC DIAGRAM 24
4.6. SUB (CAMERA) SCHEMATIC DIAGRAM 25
4.7. MAIN (MAIN CONNECTION) SCHEMATIC DIAGRAM 29
4.8. MAIN (LCD) SCHEMATIC DIAGRAM 34
4.9. MAIN (HEAD/ REC AMP) SCHEMATIC DIAGRAM 35
4.10. MAIN (VIDEO 2) SCHEMATIC DIAGRAM 36
4.11. MAIN (VIDEO 1) SCHEMATIC DIAGRAM 38
4.12. MAIN (POWER) SCHEMATIC DIAGRAM 41
4.13. MAIN (DRIVE) SCHEMATIC DIAGRAM 43
4.14. MAIN (CONTROL) SCHEMATIC DIAGRAM 44
5 CIRCUIT BOARD ASSEMBLIES 51
5.1. SUB C.B.A. (COMPONENT SIDE) 51
5.2. SUB C.B.A. (FOIL SIDE) 52
5.3. SUB C.B.A. ADDRESS INFORMATION 53
5.4. MAIN C.B.A. (COMPONENT SIDE) 54
5.5. MAIN C.B.A. (FOIL SIDE) 55
5.6. MAIN C.B.A. ADDRESS INFORMATION 56
6 CHECKING POINT OF THE CSP IC 57
6.1. CHECKING POINT TABLE 57
6.2. WAVEFORM TABLE (PLAY MODE) 80
7 REPLACEMENT PARTS LIST 86
7.1. ELECTRICAL PARTS LIST 86
CONTENTS
Page Page
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NV-GX7EG / NV-GX7EGM / NV-GX7B / NV-GX7EN / NV-GX7A / NV-GX7ENT

1 INTRODUCTION
1.1. INTRODUCTION
This service manual contains technical information which will allow service personnel´s to understand and service this
model.Please place orders using the parts list and not the drawing reference numbers.
If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service
manual.
Information for Q-Mechanism should be referd to the another manual as below.
Order No. : VMD0109026C8
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NV-GX7EG / NV-GX7EGM / NV-GX7B / NV-GX7EN / NV-GX7A / NV-GX7ENT

2 SERVICE CAUTION
2.1. HOW TO DISCHARGE THE CAPACITOR ON FRONT C.B.A.
2.2. EEPROM DATA FOR SPARE PARTS OF THE MAIN C.B.A.
When the Main C.B.A. is replaced, the fixed and average data must be changed by Tatsujin kit according to the Movie Camera’s
suffix.
Then, confirm and/or adjust the VTR and Camera section one by one.
2.3. SERVICE EXTENSION CABLES
This models is required the following extension cables for all connections.
Note 1:
Use the following extension cables when checking or adjusting individual circuit boards except module Parts.
(Main C.B.A. and Sub C.B.A.)
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NV-GX7EG / NV-GX7EGM / NV-GX7B / NV-GX7EN / NV-GX7A / NV-GX7ENT

How to use extension cables.
Fig. T1-1
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NV-GX7EG / NV-GX7EGM / NV-GX7B / NV-GX7EN / NV-GX7A / NV-GX7ENT

2.4. SERVICE EXTENSION CABLE FOR ALL C.B.A. INCLUDED IN MODULE
UNIT
This models is required the following extension cables for all connections.
Use the following extension cables when checking or adjusting individual circuit boards.
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NV-GX7EG / NV-GX7EGM / NV-GX7B / NV-GX7EN / NV-GX7A / NV-GX7ENT

How to use extension cables.
Fig. T1-2
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NV-GX7EG / NV-GX7EGM / NV-GX7B / NV-GX7EN / NV-GX7A / NV-GX7ENT

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NV-GX7EG / NV-GX7EGM / NV-GX7B / NV-GX7EN / NV-GX7A / NV-GX7ENT

3 BLOCK DIAGRAMS
3.1. CAMERA BLOCK DIAGRAM
IC202-30 REC
1.5Vp-p (20usec.div.) IC202-2 REC
3.5Vp-p (20usec.div.)
NV-GX7EG/EGM/B/EN/A/ENT
CAMERA BLOCK DIAGRAM
VDD
DATA
ADDRESS
LVD
VD
HD
CLK
CGSO
CGCS
ASPCS
SUB
PS201
PS201
PS201
PS201
PS201
PS201
PS201
PS201
(EEP ROM)
IC303
1
4
3
2
CS
DTI
DTO
CLK
10
67
66
65
(72MHz)
X201
2FCK
8
42
3
(13.5MHz)
X301
75
121
RW
DSTB
ASTB
VIV2
BEND
168
136
96
31
83
251249238226
174
171
141
140
138
137
100
97
51
50
48
47
(CAMERA MICROCOMPUTER)
IC302
DSC
TO
8bit
C OUT
8bit
Y OUT
DSC
TO
BUSY
DTO STB
BLKEND
MEGAPIX
12 1/2f
245243242247248
I/F
MICROCOMPUTER
140
139
138
137
97
94
91
88
108
106
101
98
I/F
DSC
CONVERTER
DD
D RAM
ZOOM
H.V
CNR
YCP
PROCESSOR
Y/C
60
145
11
151
103
160
163
FCK
LVD
VD
HD
22
19
18
17
(DSP)
IC301
5
14
2
3
4
A/D CLK
41
(V DR)
IC205
5
3
17
18
1
8
7
9
14
13
12
10
CH1
V1
V2
V3
CH2
V4
SUB
R
H2
H1
DS2
DS1
16
19
20
21
15
22
23
31
27
30
39
38
PULSE DATA
HIGH SPEED/CH/TRANSFER
(CG/SSG)
IC201
I/F
DATA
1110 9
D0
D9
2
11
16
(10bit)
A/D
4647482122
I/F
DATA
AGC
IC202
(CDS/AGC/A/D)
CDS 30
15
14
13
12
6
3
1
2
9
15
14
13
12
6
3
1
2
9
PS201PP291
PP291
PP291
PP291
PP291
PP291
PP291
PP291
PP291
φ R
φV1
φV2
φV3
φV4
SUB
φH2
φH1
VOUT
4
3
2
1
9
11
14
13
7
(CCD)
IC291
MAIN SIGNAL PATH IN REC MODE
NV-GX7EG / NV-GX7EGM / NV-GX7B / NV-GX7EN / NV-GX7A / NV-GX7ENT
9

3.2. CONTROL 1 BLOCK DIAGRAM
MAIN SIDE R
MAIN SIDE R
B6101
BATTERY
LITHIUM
SIDE L MAIN
DEW SENSOR
252DEW
20 SCAN3
99 LCD OPEN
13
FP6503 SCAN3
12
FP6503
52
PAUSE
D6504
21 SCAN4
10
FP6503 SCAN4
STOP
11
FP6503
34
D6504
16
D6503
FF
9
FP6503
52
D6501
16 KEY IN4
D6503
52
D6503
43
FP6503
8
PLAY
REW
7
FP6503
52
D6502
D6901
D6907
D6904
FROM DSC
1
FP6503 CARD LED
TAPE/CARD D6101 REW
S6401
S6101
C MODE TAPE/CARD
NIGHTVIEW
S6107
ONEPOINT
S6110 TITLE S6111
LCD OPEN
S6701
MULTI
S6112
STOP
S6108 PAUSE S6109
PLAY
S6105 FF S6106
CARD
ACCESS
5
FP6503
16
FP6503 SCAN2
C MODE
18 SCAN2
4
FP6503
15
FP6101
3
FP6101
14
FP6101
18
FP6101
12
FP6101
11
FP6101
10
FP6101
8
FP6101
9
FP6101
7
FP6101
17
FP6503
61
NIGHT
MULTI
D6501
2
FP6101
14
FP6503
5
FP6101
TITLE
15
FP6503
4
FP6101
ONE POINT
3
FP6503
16
FP6101
10
FP6501
13
FP6301
SCAN1
15
FP6501
8
FP6301
PHOTO SHOT
14
FP6501
9
FP6301
MAIN SIDE L
LCD OPEN
6
FP6503
13
FP6101
6
FP6101
61
D6502
KEY IN2 14
CASSETTE DOWN
S6211
C DOWN
LCD DET C.B.A.
S6212
EJECT
C DOWN 206
MAIN
MAIN
5
FP6506
1
FP6506
CASSETTE COVER
PHOTO SHOT
SIDE L
8
FP6302
2
FP6302
1
FP6302
EJECT SW 208
71 STANBY SW
16
D6504
34
D6501
KEY IN1 13
SCAN1 17
MODE CVD
MENU
S/S
34
D6502
KEY IN3 15
REAR OPERATION
STANBY SW
MENU
POWER SW
MODE POWER ON
STANBY LED
VTR LED
CAM LED
DSC LED
POWER SW 204
STANBY LED
VTR LED
CAM LED
32
29
27
13
9
7
6
5
14
3
2
1
FP6502
S/S
8
FP6502
FP6502
FP6502
FP6502
FP6502
FP6502
FP6502
FP6502
FP6502
REG3V
2
QR2007
1
6
QR2006
6
1
4
2
5
3
DSC LED
IN BATT
VREF
SW NOREG
POWER ON
QR2008 30
POWER
FROM
255
259
258
POWER ON
QR2001 163
(32.768KHz)
X2601
VDD
CS
CLK
DATA
INT 8
2
35
6
7
1
(RTC)
IC2601
18
17
16
15
5
6
7
8
FP6301
FP6301
FP6301
FP6301
FP6501
FP6501
FP6501
FP6501
RTC CS
RTC CLK
RTC DI
RTC DO
RTC INT
191
190
189
188
205
49
47
41
38
MECHA.UNIT
X1
X2
157
155
27MHz
X2003
S.PHOTO
FP2203
12
FP2203
6
FP2203
11
MAIN
Q2007
MIC ON
33
4
FP2204
3
FP2204
FP2204
2
MAIN
FP2203
1
MAIN
MAIN
MAIN
14
FP2203
FP2203
9
16
FP2203
18
FP2203
5
FP2203
REG 3V
S TAB
QR2002
Q2003
MODE SW
SENSOR
T.REEL
EE DI
EE DO
EE CLK
DAC LD
EE CS
MIC DATA
MIC CLK
MIC AD1
MIC AD2
MIC AD3
S TAB SW
S-REEL
T-REEL
S PHOTO SW1
S PHOTO SW2
T PHOTO SW1
T PHOTO SW2
S PHOTO
T PHOTO
SNS LED
POS1
POS2
POS3
LD
2
3
4
17
16
15
CLK
1
IC2005
198
199
244
245
246
10
DO
DI
CLK
IC2008
CS
(DAC)
IC2009
(EEP ROM)
DI
-
+
+
-
7
6
5
1
3
2
83
82
26
25
24
22
247
248
34
SENSOR
S.REEL
3V
TO LCD
TO VIDEO
56
186
185
167
181
187
MIC
DATA
ADDRESS/
7
8
9
3V3V
T.PHOTO
NOREG
REG3V
IC2001
(CONTROL MICROCOMPUTER)
H
L
L
NV-GX7EG/EGM/B/EN/A/ENT
CONTROL 1 BLOCK DIAGRAM
NV-GX7EG / NV-GX7EGM / NV-GX7B / NV-GX7EN / NV-GX7A / NV-GX7ENT
10