Toshiba DVR610 Service Manual - Page 23

Flow Chart No.9, Flow Chart No.7, Flow Chart No.6, Flow Chart No.8

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Page 23 highlights

FLOW CHART NO.6 P-ON+9V is not outputted. No Is 12V voltage supplied to the collector of Q1055? Yes No Is 10V voltage supplied to the base of Q1055? Yes Check Q1055 and their periphery, and replace P1 (BOARD MCV) if defective. Check D1014, D1017, C1012, and their periphery, and replace P3 (BOARD POWER SUPPLY) if defective. Is the "L" pulse inputted to the base of Q1052? No Check IC1501 and their periphery, and replace P1 (BOARD MCV) if defective. Yes Check Q1052, D1052 and their periphery, and replace P1 (BOARD MCV) if defective. FLOW CHART NO.7 P-ON+5V (1, 2) is not outputted. (P-ON+9V is outputted normally.) No Is 5V voltage supplied to the collector of Q1056? Is 12V voltage supplied to the collector of Q1057? No Yes No Is the "H" pulse inputted into the base of Q1056? Is the "H" pulse inputted into the base of Q1057? No Yes Check Q1056, Q1057 and their periphery, and replace P1 (BOARD MCV) if defective. Check D1015, D1016, L1013, C1017, C1021, and their periphery, and replace P3 (BOARD POWER SUPPLY) if defective. Check D1014, D1017, C1012, and their periphery, and replace P3 (BOARD POWER SUPPLY) if defective. Check R1057 and their periphery, and replace P1 (BOARD MCV) if defective. Check R1065 and their periphery, and replace P1 (BOARD MCV) if defective. FLOW CHART NO.8 AL+18V is not outputted. No Is the supply voltage 44V fed the cathode of D1013? Yes Check D1083, R1092, R1095, and their periphery, and replace P1 (BOARD MCV) if defective. Check D1013, C1013 and their periphery, and replace P3 (BOARD POWER SUPPLY) if defective. FLOW CHART NO.9 P-ON+11V is not outputted. Is 12V voltage supplied to the emitter of Q1102? No Yes No Is 10V voltage supplied to the base of Q1102? Yes Check Q1102 and their periphery, and replace P1 (BOARD MCV) if defective. Check D1014, D1017, C1012 and their periphery, and replace P3 (BOARD POWER SUPPLY) if defective. Is the "H" pulse inputted to the base of Q1103? No Check IC1501 and their periphery, and replace P1 (BOARD MCV) if defective. Yes Check Q1103, R1106 and their periphery, and replace P1 (BOARD MCV) if defective. 1-10-2 E9KGATR

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1-10-2
E9KGATR
P-ON+11V is not outputted.
FLOW CHART NO.9
Is 12V voltage supplied to the emitter of Q1102?
Is 10V voltage supplied to the base of Q1102?
No
Yes
Yes
Check D1014, D1017, C1012 and their periphery,
and replace P3 (BOARD POWER SUPPLY)
if defective.
FLOW CHART NO.7
P-ON+5V (1, 2) is not outputted. (P-ON+9V is outputted normally.)
Is 5V voltage supplied to the collector of Q1056?
Is 12V voltage supplied to the collector of Q1057?
No
No
Yes
Yes
Is the "H" pulse inputted into the base of Q1056?
Is the "H" pulse inputted into the base of Q1057?
Check D1015, D1016, L1013, C1017, C1021,
and their periphery, and replace P3 (BOARD
POWER SUPPLY) if defective.
Check D1014, D1017, C1012, and their periphery,
and replace P3 (BOARD POWER SUPPLY)
if defective.
No
No
Check R1057 and their periphery, and replace
P1 (BOARD MCV) if defective.
Check R1065 and their periphery, and replace
P1 (BOARD MCV) if defective.
FLOW CHART NO.6
P-ON+9V is not outputted.
Is 12V voltage supplied to the collector of Q1055?
No
No
Yes
Yes
Is 10V voltage supplied to the base of Q1055?
Check D1014, D1017, C1012, and their periphery,
and replace P3 (BOARD POWER SUPPLY)
if defective.
FLOW CHART NO.8
AL+18V is not outputted.
Is the supply voltage 44V fed the cathode of D1013?
No
Yes
Check D1083, R1092, R1095, and
their periphery, and
replace P1 (BOARD MCV) if defective.
Check Q1102 and
their periphery, and replace
P1 (BOARD MCV) if defective.
Check D1013, C1013 and their periphery, and
replace P3 (BOARD POWER SUPPLY) if defective.
Is the "L" pulse inputted to the base of Q1052?
No
Is the "H" pulse inputted to the base of Q1103?
Check Q1052, D1052
and their periphery, and
replace P1 (BOARD
MCV) if defective.
Check IC1501 and their
periphery, and replace
P1 (BOARD MCV)
if defective.
Check Q1103, R1106
and their periphery, and
replace P1 (BOARD
MCV) if defective.
Check IC1501 and their
periphery, and replace
P1 (BOARD MCV)
if defective.
Yes
No
Yes
No
Check Q1055 and their periphery, and replace
P1 (BOARD MCV) if defective.
Check Q1056, Q1057 and their periphery, and
replace P1 (BOARD MCV) if defective.