Samsung Electronics
9-7
3. PickUp Head Initial Postion
PickUp Head Initial Postion
1. Move Pick Up Head to inner diretion until pin5 of MJ4="L"
2. If pin5 of MJ4="L", then move Pick Up Head to outer diretion for a short time.
3. Ture On the Laser of Pick Up Head to judge that disc is presence or not.
3
Does Pick Up
Move to inner
direction?
Is pulse of 2.5
+-2.5V developed
at pin3,4 of MJ4?
Check
connection
between PCB
and MECHA
Is pulse of 2.5
+-2.5V developed
at pin13 of DU3?
Does Pick Up
Move to out
direction again?
Is pin5 of MJ4 =
"L" appeared?
Does Laser Turn
On?
Check voltage at
pin17 of RCN1 is
about 2.5V?
Check BUS line between RU1 and
DU3,DU3 and DU5
Replace Pick Up Head
Check line between DU3
and MJ4
Check
peripheral
circuit of DU3
and MU9
Check BUS
line between
DU3 and DU5
Check
connection
between PCB
and MECHA
OK
N
Y
N
Y
N
Y
Y
N
Y
N
Y
N
N
Summary of Contents for HT-DL70D
Page 28: ...Samsung Electronics 4 1 4 Block Diagram 4 1 MAIN Part ...
Page 30: ...Samsung Electronics 5 1 5 Printed Circuit Board Diagram 5 1 DSP TOP VIEW BOTTOM VIEW ...
Page 31: ...5 2 Samsung Electronics 5 2 1 FRONT HT DL70D ...
Page 32: ...Samsung Electronics 5 3 5 2 2 FRONT HT DL80D ...
Page 33: ...5 4 Samsung Electronics 5 3 JACK 5 4 STAND BY ...
Page 34: ...Samsung Electronics 5 5 5 5 MAIN ...
Page 35: ...5 6 Samsung Electronics 5 6 DVD MPEG 5 7 DVD LOADER TOP VIEW BOTTOM VIEW TOP VIEW BOTTOM VIEW ...
Page 36: ...Samsung Electronics 6 1 6 Wiring Diagram ...
Page 37: ...Samsung Electronics 7 1 7 Schematic Diagram 7 1 MAIN AMP PROTECTION FAN ...
Page 38: ...7 2 Samsung Electronics 7 2 FRONT DSP ...
Page 41: ...Samsung Electronics 7 5 7 5 JACK Only AMERICA area OPTION ...
Page 42: ...7 6 Samsung Electronics 7 6 JACK Only ASIA area OPTION ...
Page 43: ...Samsung Electronics 7 7 7 7 SCART JACK Only EURO area OPTION ...
Page 47: ...8 4 Samsung Electronics 4 M62463AFP ...
Page 48: ...Samsung Electronics 8 5 ...
Page 56: ...Samsung Electronics 8 13 6 M11B416256A ...
Page 58: ...Samsung Electronics 9 1 9 TroubleShooting 9 1 Main ...
Page 59: ...9 2 Samsung Electronics ...
Page 60: ...Samsung Electronics 9 3 ...
Page 61: ...9 4 Samsung Electronics ...