Service manuals, schematics, eproms for electrical technicians
PANASONIC CQ-VD6503W TROUBLESHOOTING METHOD
Type: 
(PDF)
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1.9 MB
1.9 MB
Page
15
15
Category
MONITOR
INFO-TIPS
MONITOR
INFO-TIPS
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PANASONIC CQVD-6503W METHOD CQVD6503W CQVD 6503 CQ VD6503W CQ-VD6503W
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Relevant MONITOR forum topics:
Hi all,
I see in various Sony documentation a term called "special PAL signal" or "Ant Pal signal". It is used to calibrate the color decoder. The signal is supposed to be available from a signal generator (exact model never referenced).
I have a Leader 404 PAL pattern generator. While not the most complicated, it is one of the industry standard machine. Also I don't remember seeing a fuction like special-pal in more expensive generators.
Can someone explain what this signal is, and what generator is known to produce this signal? Thanks!
Attached are waveforms and description shown in service manuals, from PVM9220 and 1440 respectively.
I see in various Sony documentation a term called "special PAL signal" or "Ant Pal signal". It is used to calibrate the color decoder. The signal is supposed to be available from a signal generator (exact model never referenced).
I have a Leader 404 PAL pattern generator. While not the most complicated, it is one of the industry standard machine. Also I don't remember seeing a fuction like special-pal in more expensive generators.
Can someone explain what this signal is, and what generator is known to produce this signal? Thanks!
Attached are waveforms and description shown in service manuals, from PVM9220 and 1440 respectively.
A fenti monitornál a következő hiba jelenség áll fenn. A monitor percekig üzemel rendesen, majd elkezd a kijelző halványan vibrálni és később teljesen elmegy a kép. Kikapcsolás és visszakapcsolás után minden kezdődik elölről.
Ha menet közben megnövelem a fényerőt, a kijelző azonnal kikapcsol.
A tápegységben és az inverterben levő elkókat cseréltem, de a hiba megmaradt.
Aki tud kérem segítsen!
ELSA ECOMO751
21'-os
Sziasztok! Ehhez a monitorhoz kérnék javítási segítséget. Két-három hónapot pihent,most egy gépre kapcsolva először ment rendesen majd egy pár perc után oldalirányból összeugrott a kép vagy 10-10cm-t aztán teljesen elsötétült, ezt megcsinálta vagy ötször aztán szétszedtem,nagyfesz és táp körül kondikat néztem jónak tűnnek egy-két gyanúsnak talált forrasztást átforrasztottam. Most összerakva már el sem indul, de a tápfelől halk kattogó hang hallható. Van ötlete valakinek mi lehet a hiba?