Panasonic PT-50DL54 Technical Manual page 4

T L
ESTING THE AMP
1. Lamp Test: ......................................................................................................... 26
2. Ballast Test: ....................................................................................................... 26
3. Microprocessor test:.......................................................................................... 28
L B LED I
OARD NDICATORS
DEFECTIVE LAMP SYMPTOMS, REPLACEMENT, & TIME RESET ......................... 31
L E L
AMP ND OF IFE
L R
AMP EPLACEMENT
L T R
AMP IME ESET
Entry to the Basic Service Mode: ........................................................................... 33
Resetting the lamp time to 0: ................................................................................. 33
PROTECTION CIRCUITS - SHUTDOWN CAUSES .................................................... 35
O ................................................................................................................... 35
VERVIEW
S B
HUTDOWN LOCK
S - P
HUTDOWN OWER
S - P
HUTDOWN OWER
S - P
HUTDOWN OWER
S - P
HUTDOWN OWER
S - P
HUTDOWN OWER
S - P
HUTDOWN OWER
S - T
HUTDOWN EMPERATURE
VIDEO SIGNAL FLOW ................................................................................................. 43
V O
IDEO UTPUT FROM
L LVDS S
OSS OF
APPENDIX.................................................................................................................... 47
I. SERVICE MODE FUNCTIONS & ACCESS .......................................................... 47
S M F
ERVICE ODE
E B S
NTRY TO ASIC
E E
NTRY TO XTENDED
E S
XIT FROM THE
II. HEXADECIMAL CONVERSION ............................................................................ 49
III. DISABLING THE LAMP: ....................................................................................... 50
IV. SCREEN REPLACEMENT.................................................................................... 51
V. SIDE A/V INPUT BOARD REMOVAL................................................................... 52
VI. HOW TO USE THE EEPROM COPY JIG ............................................................ 53
VII. L BOARD REPLACEMENT & ALIGNMENT........................................................ 54
VIII. ALIGNMENT AFTER LIGHT ENGINE ASSEMBLY REPLACEMENT ................ 55
& B ..................................................................................... 26
ALLAST
........................................................................................... 29
S ...................................................................................... 31
YMPTOMS
: ................................................................................................... 32
:....................................................................................................... 33
D ........................................................................................ 36
IAGRAM
LED B 1X........................................................................... 37
LINKS
LED B 2X........................................................................... 38
LINKS
LED B 5X........................................................................... 40
LINKS
LED B 6X, 7X,
LINKS
LED B 9X........................................................................... 41
LINKS
LED B
LINKS CONTINOUSLY
LED
BLINKS CONTINOUSLY
LVDS I
NTERFACE
................................................................................................ 45
IGNAL
.......................................................................................... 47
UNCTIONS
M : ................................................................................. 47
ERVICE ODE
S M
ERVICE ODE
M ..................................................................................... 48
ERVICE ODE
8X ......................................................... 41
OR
........................................................... 42
................................................. 42
IC ................................................................... 44
........................................................................... 48