Sony BVP-550, Maintenance Manual

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4-26(E)
BVP-550
BVP-550P
4-4. Overall Electrical Alignment
4-4-2. VTR Y Adjustment
Equipment : Oscilloscope
Test point
: TP3 (D4)/DA-88
Preparations:
OUTPUT/DCC switch (on the side panel)
→
BARS
RGB/ENC switch (on the side panel)
→
ENC
WHITE BAL switch (on the side panel)
→
PRST
Connect the Oscilloscope to the TP3 (D4) (GND:E1 (F4))/
DA-88 Board.
Adjustment procedures:
1. Menu setting :
MENU : System config
PAGE : Y/Chroma (S2)
ITEM : Y SYNC
Specifications : A = 286
±
2 mV (for NTSC)
A = 300
±
2 mV (for PAL)
2.
Menu setting
: (NTSC only)
MENU : System config
PAGE : Y/Chroma (S2)
ITEM : Y SETUP
Specifications : C = 53.5
±
2 mV
3. Menu setting :
MENU : System config
PAGE : Y/Chroma (S2)
ITEM : Y VIDEO
Specifications : B = 714
±
7 mV (for NTSC)
B = 700
±
7 mV (for PAL)
(For NTSC)
(For PAL)
4-4. Overall Electrical Alignment
Notes:
If the adjustments in this section are suspended or the
power is turned off to extend a printed circuit board and so
on, be sure to execute the FILE STORE before turning off.
(Refer to Section 4-4-23 “File Store”)
4-4-1. VCO CONT Frequency Adjustment
Note:
• Warm up the camera for about 10 minutes before this
confirmation.
Preparations:
RGB/ENC switch (on the side panel)
→
ENC
Equipment : Frequency counter,
Video signal generator
Test point
: SC out connector/
Video signal generator
Specifications : 3,579,545
±
10 Hz (for NTSC)
4,433,168
±
5 Hz (for PAL)
If the specifications are not satisfied, perform the following
adjustment.
1. Set the menu as follows and adjust the frequency by
turning the MENU SEL switch.
MENU : System config
PAGE : Y/Chroma (S2)
ITEM : SC Freq
Specifications : 3,579,545
±
10 Hz (for NTSC)
4,433,168
±
5 Hz (for PAL)
• OHB File Store
2. Set the menu as follows.
MENU : Triming file
PAGE : OHB File (T2)
ITEM : File Store
Press the MENU SEL switch (on the front panel) to
perform the triming file store.
TEST
OUT
Video signal
generator Frequency
counter
SC
OUT GENLOCK
IN