Color Electronic Viewfinder System Adjustments; Vco Adjustment (Vc-284 Board) - Sony DCR-PC101E Service Manual

DCR-PC101/PC101E
1-4. COLOR ELECTRONIC VIEWFINDER
SYSTEM ADJUSTMENTS
Before perform the viewfinder system adjustments, check the data
of page: 0, address: 10 is "00".
If not, select page: 0, address: 10, and set the data "00".
Note 1: Taken an extreme care not to destroy the liquid crystal
display module by static electricity when replacing it.
Note 2: Perform the following data setting before the viewfinder
system adjustments.
1) Select page: 3, address: C4, and set data: 67.
2) Select page: 3, address: C5, and set data: 01.
Reset the data after completing adjustment.
1) Select page: 3, address: C4, and set data: 00.
2) Select page: 3, address: C5, and set data: 00.
[Adjusting connector]
Most of the measuring points for adjusting the viewfinder system
are concentrated in CN1006 of the VC-284 board.
Connect the Measuring Instruments via the CPC-6 flexible jig (J-
6082-370-B) and CPC-6 terminal board jig (J-6082-371-A).
The following table shown the Pin No. and signal name of CN1006.
Pin No. Signal Name
1 FLASH_UNREG
3 EVF_LED_DA
5 EVF_VCO
7 MD2
9 XINIT
11 DRUM_ON
13 REC_CRRT1
15 REG_GND
17 SWP
19 GND
CN1006
2 1
20 19
Pin No. Signal Name
2 D_2.8V
4 EVF_VG
6 GND
8 XCS_MC_FLASH
10 XCS_ST_IMAGE_IC
12 FRRV
14 REC_CRRT0
16 HI_XRESET
18 RF_IN
20 RF_MON
Screw
CPC lid
Fig. 5-1-14

1. VCO Adjustment (VC-284 board)

Set the VCO free-run frequency. If deviated, the EVF screen will
be blurred.
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note 1: Check that the data of page: 0, address: 10 is "00".
Note 2: NTSC model: DCR-PC101
PAL model: DCR-PC101E
Adjusting method:
Order Page Address Data
1 0 01
2 C 51
3 C 51
4 C 51
5
6
7
8 C 52
9 0 01
Note 3: Refer to table 5-4-1. "Hexadecimal-decimal conversion
table"
Note 4: If D
' > 255, then D
52
If D ' < 0, then D
52
5-34
CAMERA
Not required
Pin 5 of CN1006 (EVF_VCO)
Frequency counter
C
51, 52
f = 15734 ± 30 Hz (NTSC)
f = 15625 ± 30 Hz (PAL)
Procedure
01
Change the data and set the
frequency (f) to the specified
value.
Press PAUSE button.
Read the data and this data is
named D .
51
Convert D to decimal
51
notation, and obtain D
(Note 3)
Calculate D ' using
52
following equations.
(decimal calculation)
D ' = D ' + 25 (NTSC model)
52 51
D ' = D ' – 25 (PAL model)
52 51
Convert D ' to a hexadeci-
52
mal number, and obtain D
(Note 3, 4)
D Press PAUSE button.
52
00
= FF (NTSC model)
52
= 00 (PAL model)
52
'.
51
.
52