Trouble Shooting - Sanyo DVD-SL25 Service Manual

TROUBLE SHOOTING

POW ER DO ES NOT TU
ON
lt ag e at
Is t h e v
O
pin 3 and 5 of CN 81 1
abou t 5. 6V?
Y
Is the voltage at pi n 3
of IC852 about 5. 0V?
Y
XE, UK only
Is the volt ag e at pin 3
of IC851 out 3. 3V?
Y
Is the volt age at pin 4
of IC850 about 1. 8V ?
Y
Check IC800, IC818, IC822
and peripheral circuite.e
LO ADER DO ES NOT ACCEPT OPEN/CLO SE
Is th e voltage at pin 3
and 14 of IC160 about 9V ?
Y
Is the lose connection at
CN160 and CN16 2
toLOADER .
N
When AC IN,
LOADERMO TOR turn?
N
Check IC800 and peripheral
ci rc uit.
All manuals and user guides at all-guides.com
N
Check IC483 and peripheral circ ui t.
N
Check IC852 and peri pheral ci rcui t.
N
Ch eck IC851 and peripheral circui t.
N
Check IC850 and periph eral ci rcui t.
N
Ch eck 9V line of
POWER BLOC K.
Y
Check each other connection to
LOADER .
Y
Chec k OPEN or SHORTat pin 29, 26, 27
and 24, 32 of IC800.
DOES NOT LI GHT DISPLA Y
Is the voltage at
pi n 1 and 2 of FL 831
about -2 8V?
Y
Is th e volt age at
pi n 31 and 32 of FL
about -2 5V?
Y
Is the volt ag e at
pin 6 and 24 of IC
abou t 5V?
Y
Is the volt ag e
at pi n 15 of IC
about -3 0V ?
Y
Re plac e FL 831 or IC
NO COLOR PL AYBACK PI CTURE OF
COMPOSITE VIDEO OUT
PICTURE mode is
BLACKand WHITE?
N
X8230 osc is 27.0 00MHz?
Y
Check IC800 or
change IC800.
- 5 -
N
Check FL2 line of
PO WER BLOCK.
N
Check FL1 line of
831
POWE R BLOCK.
N
Check IC 831 and
831
peri pher al circ ui t.
N
Check -3 0V line of
831
POWE R BLOCK.
ex. PRAM open ?
831
Y
Change PICTURE mode to
STANDA RD .
N
Ch eckX8 230and peripheral
circuit.