Read Sharp LL-T1815 (serv.man2) Service Manual online
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SERVICE MANUAL
CONTENTS
Parts marked with "
!
" are important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.
SHARP CORPORATION
CODE : 00ZLLT1815SME
LCD MONITOR
LL-T1815H
MODEL
LL-T1815B
CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION . . . 1 – 1
CHAPTER 2. CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS . . . . 2 – 1
CHAPTER 3. DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . 3 – 1
CHAPTER 4. TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 1
CHAPTER 5. WAVE FORM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 1
CHAPTER 6. BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 1
CHAPTER 7. CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 1
CHAPTER 8. PARTS LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 1
Model Name
Product Name
For North America
For others
LL-T1815H
LL-T1815U
LL-T1815E
LL-T1815B
LL-T1815Y
LL-T1815P
LL-T1815-H/B
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SERVICE PRECAUTION
[OVERCURRENT PROTECTION ELEMENT FOR USB OUTPUT OF THE POWER UNIT]
The USB output (5V, connector CN2) of the power unit is provided with an overcurrent protection element (Part Number PTC101) of PTC (positive
characteristics thermister). Its resistance becomes high when heated by an overcurrent, and shuts down the circuit similarly with a fuse. When it is
cooled down by non-conduction, its resistance returns to a low level and allows a current to flow through the circuit.
cooled down by non-conduction, its resistance returns to a low level and allows a current to flow through the circuit.
If a user erroneously allows an overcurrent to flow through an USB device, the PTC101 cuts off the current. When repaired, it returns to normal. Note
this operation of the PTC 101 in case of an USB error.
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