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Model
GV-D300
Pages
127
Size
27.72 MB
Type
PDF
Document
Service Manual
Brand
Device
VCR
File
gv-d300.pdf
Date

Sony GV-D300 Service Manual ▷ View online

5-1
GV-D300/D300E/D900/D900E
SECTION 5
ADJUSTMENTS
5-1. ADJUSTMENT PREPARATIONS
With 5.5-inch LCD panel
: GV-D900/D900E
Without 5.5-inch LCD panel : GV-D300/D300E
1-1.
PREPARATIONS BEFORE ADJUSTMENT
1-1-1.
List of Service Tools
• Oscilloscope
• Regulated power supply
• Vectorscope
• Frequency counter
• Adjustment screwdriver
• Monitor TV
• Digital voltmeter
• Pattern signal generator
J-1
J-2
J-6
J-3
J-7
J-8
J-4
J-5
Fig. 5-1-1.
J-9
Refer to section “5-4. SERVICE MODE” for the adjustment
remote commander.
Note:
If the microprocessor IC in the adjustment remote commander is not the new microprocessor (UPD7503G-C56-12), the pages cannot be switched.
In this case, replace the IC with the new microprocessor (8-759-148-35).
Ref. No.
J-1
J-2
J-3
J-4
J-5
J-6
J-7
J-8
J-9
Name
Adjustment remote commander (RM-95 upgraded). Note
CPC-6 jig
CPC-6 terminal board jig
Power cable
IR receiver jig
Extension cable (80P, 0.5mm)
Extension cable (50P, 0.5mm 
 48P, 0.8mm)
Extension cable (18P, 0.5 mm)
CPC-10 jig
Parts Code
J-6082-053-B
J-6082-370-A
J-6082-371-A
J-6082-223-A
J-6082-383-A
J-6082-421-A
J-6082-422-A
J-6082-423-A
J-6082-424-A
Usage
For adjusting the video section
For adjusting the video section
For correction between the battery terminal and DC power
supply unit
For adjusting the IR transmitter
For extension between the CB-61 board (CN9921) and
the RJ-77 board (CN9901)
For extension between the CB-61 board (CN9930) and
the RJ-77 board (CN9904)
For extension between the RJ-77 board (CN3100) and
capstan motor
For adjusting the LCD system
5-2
5-2. MECHANISM SECTION
ADJUSTMENT
For details of mechanism section adjustments, checks, and
replacement of mechanism parts, refer to the separate volume “DV
MECHANICAL ADJUSTMENT MANUAL      D Mechanism
and  DV  MECHANICAL  ADJUSTMENT  MANUAL  
 D200 Mechanism ”.
2-1.
OPERATING WITHOUT CASSETTE
1)
Refer to “2. Removal” and supply the power with the cabinet
assembly removed.
2)
Connect the adjustment remote commander to the LANC jack.
3)
Turn on the HOLD switch of the adjustment remote
commander.
4)
Close the cassette compartment without the cassette.
5)
Select page: 0, address: 01, and set data: 01.
6)
Select page: C, address: 52, and set data: FD, and press the
PAUSE button of the adjustment remote commander.
7)
Select page: D, address: 10, and set data: 10, and press the
PAUSE button of the adjustment remote commander.
8)
Turn off the HOLD switch of the adjustment remote
commander.
9)
Turn the power off and then on.
The above procedure enables the mechanism to operate without the
cassette. After checking operations be sure to perform “Procedure
After Checking Operations”.
To use the “No-Cassette Operation Mode” and “Forced Power ON
Mode” together, set the following data to page: D, address:10.
Forced power ON mode ...................................................... 12
 [Procedure after checking operations]
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: C, address: 52, and set data: FF, and press the
PAUSE button of the adjustment remote commander.
3)
Select page: D, address: 10, and set data: 00, and press the
PAUSE button.
4)
Select page: 0, address: 01, and set data: 00.
5)
Disconnect the power supply of the unit.
2-2.
TAPE PATH ADJUSTMENT
1. Preparations for Adjustment
1)
Clean the tape running side (tape guide, drum, capstan shaft,
pinch roller).
2)
Connect the adjustment remote commander to the LANC jack.
3)
Turn on the HOLD switch of the adjustment remote
commander.
4)
Select page: 3, address: 3C, and set data: 07 (NTSC), 27 (PAL).
5)
Connect the oscilloscope.
Channel 1: CB-61 board, CN9928 Pin !¢ (RF MONITOR)
(Note 1)
External trigger: CB-61 board, CN9928 Pin !§
Note 1:
Connect the oscilloscope via CPC-6 jig (J-6082-370-A),
CPC- 6 terminal board jig (J-6082-371-A).
Note 2:
Connect Pins !¢ and !£ (GND) of CN9928 with a 75 
 resistor.
6)
Playback an alignment tape (XH2-1) for tracking.
7)
Check that the oscilloscope RF waveform is flat at the entrance
and exit. If not flat, adjust according to the separate volume
“DV MECHANICAL ADJUSTMENT MANUAL 
D Mechanism and DV MECHANICAL ADJUSTMENT
MANUAL     D200 Mechanism  ”.
8)
After completing the adjustment, perform “2. Procedure after
checking operations”.
CN9928 of CB-61 board
[Procedure after operations]
1)
Connect the adjustment remote commander, and turn on the
HOLD switch.
2)
Select page: 3, address: 3C, and set data: 00.
3)
Disconnect the power supply of the unit.
Fig. 5-2-1
Pin No.
1
3
5
7
9
11
13
15
17
19
Signal Name
DEC FSC
GND
ENV OUT
LOCK
VCC1
VCC2
GND
GND
DEC B-Y
CPC VGL –18V
Pin No.
2
4
6
8
10
12
14
16
18
20
Signal Name
GND
XCHG
GND
RF OUT
EQ IN
AGC IN
RF MONITOR
JSWP
DEC R-Y
AFC ERR
CH1
CH2
(Trigger)
Must be flat
3.3msec
Ver 1.3  1999.3
5-3
5-3. ELECTRICAL ADJUSTMENTS
NTSC model : GV-D300/D900
PAL model :
GV-D300E/D900E
3-1.
PREPARATIONS BEFORE ADJUSTMENTS
Use the following measuring instruments for video section
adjustments.
3-1-1.
Equipment Required
1)
TV monitor
2)
Oscilloscope (dual-phenomenon, band above 30 MHz with
delay mode) (Unless specified otherwise, use a 10 : 1 probe.)
3)
Frequency counter
4)
Pattern generator with video output terminal
5)
Digital video camera recorder
DCR-VX1000 (NTSC)
DCR-VX1000E (PAL)
6)
Vectorscope
7)
Digital voltmeter
8)
Audio generator
9)
Audio level meter
10) Audio distortion meter
11) Audio attenuator
12) Regulated power supply
13) Alignment tapes
• Tracking standard (XH2-1)
Parts code: 8-967-997-01
• SW/OL standard (XH2-3)
Parts code: 8-967-997-11
• Audio operation check for NTSC (XH5-3)
Parts code: 8-967-997-51
• System operation check for NTSC (XH5-5)
Parts code: 8-967-997-61
• BIST check for NTSC (XH5-6)
Parts code: 8-967-997-71
• Audio operation check for PAL (XH5-3P)
Parts code: 8-967-997-55
• System operation check for PAL (XH5-5P)
Parts code: 8-967-997-66
• BIST check for PAL (XH5-6P)
Parts code: 8-967-997-76
14) Adjustment remote commander (J-6082-053-B)
15) IR receiver jig (J-6082-383-A)
16) CPC-6 jig (J-6082-370-A)
17) CPC-6 terminal board jig (J-6082-371-A)
18) Extension cable (50P, 0.5 mm — 48P, 0.8mm)
For extension between the CB-61 board (CN9930) and the RJ-
77 board (CN9904) (J-6082-422-A)
19) Extension cable (80P, 0.5 mm)
For extension between the CB-61 board (CN9921) and the RJ-
77 board (CN9901) (J-6082-421-A)
20) Extension cable (18P, 0.5 mm)
For extension between the RJ-77 board (CN3100) and the
capstan motor. (J-6082-423-A)
21) CPC-10 jig (J-6082-424-A)
For details of the adjustment remote commander, refer to
“5-4. SERVICE MODE”.
5-4
3-1-2.
Precautions on adjusting
1)
Removing the CB-61 board CN9926 means removing the
lithium 3V power supply (FP-571 board BT001) , data such as
date, time, user-set menus will be lost. After completing
adjustments, reset these data. If the CB-61 board CN9926 has
been removed, the self-diagnosis data, data on history of use
(total drum rotation time etc. ) will be lost. Before removing,
note down the self-diagnosis data and the data on the history
use (data of page: 2, address: 35 to 3D). (Refer to the “5-4.
Service Mode” for the data on the history use.)
2)
The LCD block and EASY connector need not be connected
except during “Battery End Adjustment” and “LCD system
Adjustments”. To remove, disconnect the following connectors.
1. CB-61 board CN9923 (32P, 0.5mm)
2. CB-61 board CN9931 (40P, 0.5mm)
3)
IR-29 board (PANEL CLOSE switch, LASER LINK
transmitter) need not be connected except during “IR
Transmitter Adjustment”. To remove, disconnect the following
connectors.
1. CB-61 board CN9924 (10P, 0.5mm)
4)
If opening the CB-61 board, use the following extension cable
between the CB-61 board CN9921/CN9930 and RJ-77 board
CN9901/CN9904.
1. J-6082-421-A (80P, 0.5mm)
2. J-6082-422-A (50P, 0.5mm — 48P, 0.8mm)
5)
If opening the RJ-77 board, use the following extension cable
between the RJ-77 board (CN3100) and capstan motor.
1. J-6082-423-A (18P, 0.5mm)
Note 1: Setting the “Forced Power ON” mode
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 10, set data: 02, and press the PAUSE
button of the adjustment remote commander.
The above procedure will enable the VTR power to be turned on
with the power switch block (FP-575) removed.
After completing adjustments, be sure to exit the “Forced Power
ON mode”.
Note 2: Exiting the “Forced Power ON” mode
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 10, set data: 00, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 0, address: 01, and set data: 00.
3-1-3.
Adjusting Connectors
Some of the adjusting points (except for that of the LCD system
adjustments) are concentrated at CB-61 board CN9928 and CN9932.
Connect the measuring instruments via the CPC-6 jig (J-6082-370-
A) , CPC-6 terminal board jig (J-6082-371-A). The following tables
list the pin numbers and signal names of CN9928 and CN9932.
CB-61 board CN9928
CB-61 board CN9932
Pin No.
1
3
5
7
9
11
13
15
17
19
Signal Name
DEC FSC
GND
ENV OUT
LOCK
VCC1
VCC2
GND
GND
DEC B-Y
CPC VGL –18V
Pin No.
2
4
6
8
10
12
14
16
18
20
Signal Name
GND
XCHG
GND
RF OUT
EQ IN
AGC IN
RF MONITOR
JSWP
DEC R-Y
AFC ERR
Pin No.
1
3
5
7
9
11
13
15
17
19
Signal Name
GND
TDI
TCK
GND
GND
GND
NPS B-Y
GND
NPS PLL
GND
Pin No.
2
4
6
8
10
12
14
16
18
20
Signal Name
GND
TDAA
TMS
GND
NPS C
GND
NPS R-Y
GND
NPS Y
GND
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