JVC Gz-hd7 Repair Manual

							(No.YF200)1-21
SECTION 4
ADJUSTMENT
4.1 PREPARATION
4.1.1 Precaution
Camera system and deck system of this model are specially
adjusted by using PC. 
However, if parts such as the following are replaced, an
adjustment is required. The adjustment must be performed in a
Service Center equipped with the concerned facilities.
• EEP ROM (IC1005 of DIGITAL board)
• OP BLOCK ASSEMBLY
• MONITOR ASSEMBLY
In the event of malfunction with electrical circuits, first find a
defective portion with the aid of proper test instruments as shown
in the following electrical adjustment procedure, and then
commence necessary repair/ replacement/adjustment.
• In observing chip TP, use IC clips, etc. to avoid any stress.
Prior to replacement of chip parts (especially IC), remove the
solder completely to prevent peeling of the pattern.
• Use a patch cord if necessary. As for a patch cord, see the
BOARD INTERCONNECTIONS.
• Since connectors are fragile, carefully handle them in
disconnecting and connecting the FPC. 
4.1.2 REQUIRED TEST EQUIPMENT
• Personal computer (for Windows)
• Color TV monitor
• Oscilloscope (dual-trace type, observable 100MHz or higher
frequency). The one observable 300 MHz or higher frequency
is recommended.
• Digital voltmeter
• DC power supply or AC adapter
• Frequency counter (with threshold level adjuster)4.1.3 TOOLS REQUIRED FOR ADJUSTMENT 
IDE AdapterYTU96041IDE AdapterYTU96043FPC WireYTU94165-40
Torque DriverYTU94088BitYTU94088-003
Chip IC Replacement JigPTS40844-2
TweezersP-895
Cleaning ClothKSMM-01
Charing Battery Adjuatment JigYTU93112A
INF Adjustment Lens HolderYTU94087Mini StandYTU93108
Gray Scale ChartYTU94133AColor Bar ChartYTU94133CFocus ChartYTU92001-018
PC CableQAM0099-005Jig Connector CableYTU93106D
Communication CableYTU93111-1Service Support SystemYTU94057-104
INF  Adjustment LensYTU92001B
Light Box AssemblyYTU93096A 
						

							1-22 (No.YF200)
•  Torque Driver
Be sure to use to fastening the mechanism and exterior parts
because those parts must strictly be controlled for tightening
torque.
•  Bit
This bit is slightly longer than those set in conventional torque
drivers.
•  Tweezers
To be used for removing and installing parts and wires.
•  Chip IC Replacement Jig
To be used for adjustment of the camera system.
•  Cleaning Cloth
Recommended the Cleaning cloth to wipe down the video
heads, mechanism (tape transport system), optical lens sur-
face.
•  INF Adjustment Lens
To be used for adjustment of the camera system. For the
usage of the INF adjustment lens, refer to the Service Bulletin
No. YA-SB-10035.
•  INF Adjustment Lens Holder
To be used together with the Camera stand for operating the
Videocamera in the stripped-down condition such as the sta-
tus without the exterior parts or for using commodities that are
not yet conformable to the interchangeable ring. For the usage
of the INF lens holder, refer to the Service Bulletin No. YA-SB-
10035.
•  Mini Stand
To be used together with the INF adjustment lens holder. For
the usage of the Mini stand, refer to the Service Bulletin No.
YA-SB-10035.
•  Light Box Assembly
To be used for adjustment of the camera system. For the
usage of the Light box assembly, refer to the Service Bulletin
No. YA-SB-10035.
•  Gray Scale Chart
To be used for adjustment of the camera system. For the
usage of the INF adjustment lens, refer to the Service Bulletin
No. YA-SB-10035.
•  Color Bar Chart
To be used for adjustment of the camera system. For the
usage of the INF adjustment lens, refer to the Service Bulletin
No. YA-SB-10035.
•  Focus Chart
To be used for adjustment of the camera system. For the
usage of the INF adjustment lens, refer to the Service Bulletin
No. YA-SB-10035.
•  Service Support System
To be used for adjustment with a personal computer. Software
can be downloaded also from JS-net.
•  Communication Cable
Connect the Communication cable between the PC cable and
Jig connector cable when performing a PC adjustment.
•  PC Cable
To be used to connect the Videocamera and a personal computer
with each other when a personal computer issued for adjustment.
•  Jig Connector Cable 
Connected to JIG CONNECTOR of the main board and used
for electrical adjustment, etc.
•  Charging Battery Adjustment Jig 
This Jig is used for the adjustment of the camcorders that have
Main Body battery charging function.
•  IDE Adapter(YTU96041) 
To be used for HDD test.
•  IDE Adapter(YTU96043) 
To be used for HDD test.
•  FPC Wire 
To be used for connecting the HDD to the IDE adapter.
4.2 JIG CONNECTOR CABLE CONNECTION
„ Connection procedure 
NOTE
• Be sure to turn the power “OFF”, when connecting the JIG
CONNECTOR CABLE.
If the JIG CONNECTOR CABLE is connected with the pow-
er “ON”, communication error may occur.
• Remove the 8 screws (1-8), and then remove the B.COV-
ER ASSY.
Fig.4-2-1
PC CABLEB.COVER ASSY
COMMUNICATION
CABLEJIG CONNECTOR
CABLE
MENU RS232C
COM PORT
COMMUNICATION
CABLE JIG CONNECTORPERSONAL COMPUTER JIG
CONNECTOR
or
TO AL_3VSYS
TO IF_RX
TO IF_TX
TO GNDBLUE
RED
WHITE
BLACK
43
5
68
72 1 
						

							(No.YF200)1-23 Fig.4-2-2
 „ Jig connector diagrams
Fig.4-2-34.3 IDE ADAPTER AND FPC WIRE 
•  IDE ADAPTER and FPC WIRE are used for HDD test.
Check with the NOTE, and then refer to the below figure (Fig.
4-3-1) for the connection procedure.
図 4-3-1
 
• There are two types of IDE ADAPTER (Model Number:
YTU96041, YTU96043). Either type can be used.
• Using the FPC WIRE originally used with this unit will dam-
age the HDD. 
Use the FPC WIRE (Model Number: YTU94165-40) to con-
nect the IDE ADAPTER and the HDD.
• When connecting the FPC WIRE (Model Number:
YTU94165-40) and the HDD, follow the instructions on the
label attached to the FPC WIRE.
Connecting the FPC WIRE upside-down will damage the
HDD. 
JIG CONNECTOR CABLE  [YTU93106D]
1 1516 30
NC
NC
LCD_R
LCD_G
LCD_B
LCD_COM
REG_3.1V
UARXD0
UATXD0
AL_3VSYS
IF_TX
IF_RX
MOD0
SYS_RSTL
SYS_TCK
LCD_HD
SYS_TRSTL
GND
SYS_TDO
GND
SYS_TDI
IRU
SYS_TMS
VF_HD
VF_COM
VF_B
VF_G
VF_R
GND
NCNC
LCD_R
LCD_B
REG_3.1V
UATXD0
IF_TX
MOD0
SYS_TCK
SYS_TRSTL
SYS_TDO
SYS_TDI
SYS_TMS
VF_COM
VF_G
GND
NC
LCD_G
LCD_COM
UARXD0
AL_3VSYS
IF_RX
SYS_RSTL
LCD_HD
GND
GND
IRU
VF_HD
VF_B
VF_R
NC1
2
3
4
5
6
7
8
9
10
11
12
13
14
151
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30 16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
JIG CONNECTOR CABLE (YTU93106D)
DIGITAL CN109JIG CONN. BOARD
(PIN NO.)IDE ADAPTERFPC WIRE
HDD 
						

							1-24 (No.YF200)
SECTION 5
TROUBLE SHOOTING
5.1 SERVICE NOTE
a9æ 0.059N:/m (0.6kgf:/cm)““b9æ 0.078N:/m (0.8kgf:/cm)““c9æ 0.147N:/m (1.5kgf:/cm)““d9æ 0.176N:/m (1.8kgf:/cm)““e9æ 0.098N:/m (1.0kgf:/cm)
f 9æ 0.245N:/m (2.5kgf:/cm)
[21]
3-2-24 3-2-25 3-2-23 [1] [2] [4][3] [5][6]
[7] [8] [9] [10] [11] [12]
 -  1 2 3 4 5 6 7 8 9  - 10 11 12 13
3-2-1 3-2-2 -
--
-
- --
- 3-2-4 3-2-3
3-2-5
b ab
b
bcb3-2-6 3-2-7 3-2-8
deb bb e [13] [14] [15]
[17][18] [19] [20]
 25  26  27  28  29  30  31  32  33  34  35  36  37  38  39 14  -  15 16 17 18 19 20 21 22 23 24
 40 41 42 43 44 45 46 47 48 49 50 51 52 53
3-2-9 3-2-10 3-2-113-2-12
3-2-133-2-14 3-2-15 [16]
bbdc [21] [22] [23]
[26][27] [30][29] [28]
 54 55 56 57 58 59 60 61 62 63  -  64 65 66 67  68 69 70 71 72 73 74 75 76 77 78 79
3-2-16 3-2-17 3-2-183-2-19
3-2-20-1
3-2-21 3-2-22 [25] [24]
 1  2  3  4  5  6  7  8  9  10  11
[30]
 1  2  3  4  5  6  7  8  9
f
[14]
 1  2  3  4  5  6
bf
b
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing (Fig.No.)
Screw tightening torque
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing (Fig.No.)
Screw tightening torque
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing (Fig.No.)
Screw tightening torque
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing (Fig.No.)
Screw tightening torque
CABINET PARTS AND ELECTRICAL PARTS(1)
[21]OP BLOCK ASSY/CCD BOARD ASSY
[14]MONITOR ASSY [30]MONITOR ASSY CABINET PARTS AND ELECTRICAL PARTS(2)
CABINET PARTS AND ELECTRICAL PARTS(3)
NOTE:9Ý)9Öand9Ö9Ö (This mark shows where to attach the screws) : Do not reuse the screws because the screw lock bond was applied to prevent the screws from loosening. 
     Prepare the specified screws and use them in place of the removed screws.
9Þ)Tightening torque for the screws
 nThere are setting limits of the torque value for the torque driver. If the value exceeds the setting value, take it as a rough measurement (reference value),  
   and tighten the screw manually. 
 nThe specified torque value is a recommended value of the initial assembly. Therefore, set the value below the specified torque value in the assembling procedure.
     Be careful not to break either the screws or the screw holes.
 nWhen attaching the tapping screws, pay special attention not to break the screw holes. Refer to the specified torque value just as a rough guideline.   
						

							(No.YF200)
VPTPrinted in Japan
Victor company of Japan, Limited
Camcorder Category  12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan 
						

							(No.YF200)3-1
PARTS LIST
SAFETY PRECAUTION
Parts identified by the  symbol are critical for safety. Replace only with specified part numbers.
BEWARE OF BOGUS PARTS
Parts that do not meet specifications may cause trouble in regard to safety and performance. We recommend that genuine 
JVC parts be used. 
1. EXPLODED VIEW
1.1 FINAL ASSEMBLY
The instruction manual to be provided with this product will differ according to the destination.
208 208
208208
209
201
202
203
205
204
209
210
206
207
154
151
152153119
117118
116
116116113
146146
150
143
F2
F2
148
149
147
150
144 143
116
115
114
112109
106
111 110
108 107
146
208
154
208
F1
F1
145
F3
F3
141
141141142141
120
122
MODELMARK
CB
A GZ-HD7EK
GZ-HD7EX
GZ-HD7EY 
						

							3-2(No.YF200)
ASSEMBLY
 ASSEMBLY
ASSEMBLY

 ASSEMBLY
137
139
134
132132
132
132
131
131
130
130
140
140136 136
136
F4F4
F5F5
WR3
F6WR3
F6
cc F8
F7
F8
F7
F9
105140
139137134135 133
103 104
102
132
131
130
101
133
135
F9
WR2WR2
b
b
a
a
138 138
WR1WR1
ASSEMBLYFRONT
CDS BOARDDIGITAL BOARDANALOG BOARD
ASSEMBLY
REG BOARD
121
 VF ASSEMBLY
123 OP BLOCK 
						

							(No.YF200)3-3
ASSEMBLY SW BOARDOPE BOARD
ASSEMBLY 340
338310
310 310
311 311 339
312
 ASSEMBLY
309
F11 332
330
335
334
337
333
304
305
301
310
320
308
312
F13
F13
g
F12
g
336
336
f
339
d
d e
F10
f
e
F10
WR4
WR4
d
d
320D
320C 320A
320B320E
339F12
F11
338
338
307
306
303
302
MONITOR BOARD 
						

							3-4(No.YF200)
FRONT BOARD
ASSEMBLY 509
510510510
507
502
501
510
503
509
504
508
505
511
506
603604604
603
602 601
604
603
606
605
F14 F14
511
CCD BOARD
ASSEMBLY
h
h
513512
513
FRONT ASSEMBLY
601D 601D 601F
601E 601B
601C 601G601G
601H
601H
601G601G
601A
601H601J
601J
 
514
514 
						

							(No.YF200)3-5
1.2 VF ASSEMBLY 
 ASSEMBLY
725
727
718
721
726
727
717 715
725
714
713
720
722
719
724
708
702
701711723
712
710
b
a
a
b
709
703
704
703 704 705 706 707
716 VF BOARD