Toshiba DVR610 - DVDr/ VCR Combo Service Manual page 34

FLOW CHART NO.10
Video E-E does not appear.
Are the video signals inputted to each pin of
IC2805?
IC2805 8PIN VIDEO-IN1 (REAR)
IC2805 10PIN VIDEO-IN2 (FRONT)
Is the video signal ouputtted to Pin(20) of IC2805?
Is the video signal inputted to Pin(30) of IC1301?
Is the C-SYNC signal outputted to Pin(25) of IC1301?
Is the C-SYNC signal inputted to Pin(50) of IC1501?
Yes
Check the line between Pin(25)
of IC1301 and Pin(50) of IC1501,
and replace P1 (BOARD MCV)
if defective.
Is the video signal inputted into Pin(1) of IC2101?
Is the video signal outputted to Pin(15) of IC2101?
Continued to C on the next page.
Yes
Yes
Yes
Yes
No
Replace P1
(BOARD MCV).
Yes
Yes
Check the line between video input terminal and
No
each pin of IC2805, and replace P1 (BOARD MCV)
if defective.
IC2805 8PIN
IC2805 10PIN
Are active level of Pin(22,23,24) of IC2805 become
No
as shown below?
INPUT
LINE(REAR)
LINE(FRONT)
Yes
Replace P1
(BOARD MCV).
No
Check the line between Pin(20) of IC2805 and
Pin(30) of IC1301, and replace P1 (BOARD MCV)
if defective.
Is 5V voltage supplied to Pin(23) of IC1301?
Yes
Check the P-ON+5V(2) line and replace
P1 (BOARD MCV) or P3 (BOARD
POWER SUPPLY) if defective.
Yes
Is the serial data, clock and chip select signal
supplied to Pin(53, 54, 55) of IC1301?
Check the line between Pin(53,54,55) of IC1301
and Pin(19,20,21) of IC1501, and replace
P1 (BOARD MCV) if defective.
No
Check the line between Pin(26) of IC1301 and
Pin(1) of IC2101, and replace P1 (BOARD MCV)
if defective.
No
Is the "H" pulese inputted to Pin(9, 10, 11) of
IC2101?
Yes
Is 5V voltage supplied to
Pin(16) of IC2101?
Is 5V voltage supplied to
Pin(7) of IC2101?
No
Check the AL+5V, AL-5V line, and replace
P1 (BOARD MCV) if defective.
1-10-13
→ JK2804
VIDEO-IN1 (REAR)
→ JK1231
VIDEO-IN2 (FRONT)
22PIN 23PIN 24PIN
H H
H L
No
Check the line between
Pin(22,23,24) of IC2805 and
Pin(57,58,59) of IC1501, and
replace P1 (BOARD MCV)
if defective.
No
No
No
Replace P1
(BOARD MCV).
Yes
Replace P1
(BOARD MCV).
L
H
No
E9KGATR