Read Sharp PN-Y425 Service Manual online
SERVICE MANUAL
CODE :00ZPNY325SM/E
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
CHAPTER 1. OUTLINE OF THE PRODUCT ············································· 1-1
CHAPTER 2. INSTALLATION, ADJUSTMENT, SETTING, OPERATION 2-1
CHAPTER 3. INPORTANT INFORMATION FOR SERVICING THE DISPLAY ··· 3-1
CHAPTER 4. SERVICE MENU/ VARIOUS SETTING TOOL OPERATING PROCEDURES ········· 4-1
CHAPTER 5. FIRMWARE UPDATE PROCEDURES ································ 5-1
CHAPTER 6. DISASSEMBLY AND ASSEMBLY (PN-Y325) ···················· 6-1
CHAPTER 7. DISASSEMBLY AND ASSEMBLY (PN-Y425/Y475Y555) ··· 7-1
CHAPTER 8. TOROUBLESHOOTING ······················································· 8-1
CHAPTER 9. HARDWARE DESVCRIPTIONS ·········································· 9-1
CONTENTS
LCD Monitor
MODEL
PN-Y325
PN-Y425
PN-Y475
PN-Y555
CODE :00ZPNY325SM/E
<Solder composition code of lead-free solder>
Solder composition
Solder composition code
Sn-Ag-Cu
a
Sn-Ag-Bi
Sn-Ag-Bi-Cu
b
Sn-Zn-Bi z
Sn-In-Ag-Bi i
Sn-Cu-Ni n
Sn-Ag-Sb s
Bi-Sn-Ag-P
Bi-Sn-Ag
p
(1) NOTE FOR THE USE OF LEAD-FREE SOLDER THREAD
When repairing a lead-free solder PWB, use lead-free solder thread. Never use conventional lead solder thread, which may cause a
breakdown or an accident.
Since the melting point of lead-free solder thread is about 40°C higher than that of conventional lead solder thread, the use of the exclu-
sive-use soldering iron is recommendable.
(2) NOTE FOR SOLDERING WORK
Since the melting point of lead-free solder is about 220°C, which is about 40°C higher than that of conventional lead solder, and its soldering
capacity is inferior to conventional one, it is apt to keep the soldering iron in contact with the PWB for longer time. This may cause land
separation or may exceed the heat-resistive temperature of components. Use enough care to separate the soldering iron from the PWB when
completion of soldering is confirmed.
Since lead-free solder includes a greater quantity of tin, the iron tip may corrode easily. Turn ON/OFF the soldering iron power frequently.
If different-kind solder remains on the soldering iron tip, it is melted together with lead-free solder. To avoid this, clean the soldering iron tip
after completion of soldering work.
If the soldering iron tip is discolored black during soldering work, clean and file the tip with steel wool or a fine filer.
CAUTIONS
THERE IS A RISK OF EXPLOSION IF THE BATTERY
IS REPLACED BY AN INCORRECT TYPE.
PROPERLY DISPOSE OF USED BATTERIES ACCORDING
TO THE INSTRUCTIONS.
LEAD-FREE SOLDER
The PWB’s of this model employs lead-free solder. The “LF” marks indicated on the PWB’s and the Service Manual mean “Lead-Free” solder.
The alphabet following the LF mark shows the kind of lead-free solder.
CAUTIONS
THERE IS A RISK OF EXPLOSION IF THE BATTERY
IS REPLACED BY AN INCORRECT TYPE.
PROPERLY DISPOSE OF USED BATTERIES ACCORDING
TO THE INSTRUCTIONS.
CAUTIONS
DOUBLE POLE/NUTRAL FUSING
ATTENTION.
Double pôle/fusible sur le neutre.
Contents
Contents
CHAPTER 1.OUTLINE OF THE PRODUCT
1. Feature
1-1
2. Specifications
1-2
3. PART NAMES AND FUNCTION
1-9
4. SCREEN DISPLAY
1-10
CHAPTER 2.INSTALLATION, ADJUSTMENT, SETTING, OPERATION
1. INSTALLATION
2-1
2. ADJUSTMENT
2-19
3. MENU ITEMS
2-20
4. PLAYING THE FILES IN A USB FLASH DRIVE
2-26
CHAPTER 3.IMPORTANT INFORMATION FOR SERVICING THE DISPLAY
1. Main PWB, LCD MODULE, PARTS REPLACEMENT PROCEDURES
3-1
2. TENTATIVE STAND FOR MAIN UNIT
3-2
CHAPTER 4.SERVICE MENU/VARIOUS SETTING TOOL OPERATING PROCEDURES
1. OPERATING PROCEDURES
4-1
2. SERVICE TOOL
4-5
CHAPTER 5.FIRMWARE UPDATE PROCEDURES
1. FIRMWARE UPDATE
5-1
2. How to update Main firmware using USB Flash Drive
5-1
Contents
CHAPTER 6.DISASSEMBLY AND ASSEMBLY (PNY-325)
1.PWB AND WIRING DIAGRAM
6-1
2.REAR COVER
6-3
3.POWER PWB
6-5
4.MAIN PWB
6-6
5.LED/KEY PWB
6-8
6.SPEAKER
6-11
7.LCD MODULE
6-12
CHAPTER 7.DISASSEMBLY AND ASSEMBLY (PN-Y425/Y475/Y555)
1.PWB AND WIRING DIAGRAM
7-1
2.REAR COVER
7-6
3.POWER PWB
7-8
4.MAIN PWB
7-9
5.Speed relay PWB
7-11
6.LED/IR PWB
7-12
7.SPEAKER
7-15
8.LCD MODULE
7-16
CHAPTER 8.TROUBLESHOOTING
1. THE POWER IS NOT SUPPLIED (THE LED DOES NOT LIGHT UP)
8-1
2. THE REMOTE CONTROL DOES NOT WORK
8-1
3. THE DISPLAY DOES NOT WORK / DISPLAY ABNORMALITY
8-2
4. THE BACKLIGHT DOES NOT LIGHT UP
8-2
5. SOUND IS NOT OUTPUTED/ OUTPUT SOUND ABNORMALITY
8-3
6. DAISY CHAIN IS NOT MADE / DISPLAY ABNORMALITY
8-3
7. CAN NOT CONTROL RS-232C CONNECTION
8-4
8. CAN NOT CONTROL LAN CONNECTION
8-4
9. THE LED LIGHTS UP IN ORDER OF RED 3 GREEN (TEMPERATURE ERROR
8-5
10. CAN NOT PLAY FILES IN USB FLASH DRIVE
8-5
