Panasonic BRS1D Service Manual ▷ View online
PSG1012001CE
A6
Mechanism Unit
Model No.
BRS1D
TABLE OF CONTENTS
PAGE
PAGE
1 Mechanism Overview (BRS1D) ------------------------------ 2
1.1. Mecha Chassis Assembly / Tray / Traverse
Unit ------------------------------------------------------------ 2
1.2. Traverse Motor --------------------------------------------- 3
2 Warning -------------------------------------------------------------- 4
2.1. Prevention of Electro Static Discharge (ESD)
to Electrostaticy Sensitive (ES) Devices---------- 4
2.2. Precaution of Laser Diode------------------------------- 5
2.3. Service caution based on Legal restrictions -------- 6
2.4. Handling Precaution for Traverse Unit --------------- 7
2.3. Service caution based on Legal restrictions -------- 6
2.4. Handling Precaution for Traverse Unit --------------- 7
3 Mechanism Operation ------------------------------------------ 9
3.1. Close/Open Operation ----------------------------------- 9
3.2. Open/Close Operation ----------------------------------10
3.3. Initialization------------------------------------------------- 11
3.4. Fail Safe Mode --------------------------------------------13
3.2. Open/Close Operation ----------------------------------10
3.3. Initialization------------------------------------------------- 11
3.4. Fail Safe Mode --------------------------------------------13
4 Disassembly and Assembly Instructions ---------------14
4.1. Flow Chart--------------------------------------------------15
4.2. Disassembling Procedures-----------------------------16
4.2. Disassembling Procedures-----------------------------16
4.3. Assembly Procedure ------------------------------------ 21
5 Reliability ---------------------------------------------------------- 30
5.1. Diagram of Reliability P.C.B. -------------------------- 30
5.2. FUNCTIONS Description ------------------------------ 31
5.3. AGING MODE Description ---------------------------- 31
5.4. Setup Connection ---------------------------------------- 32
5.5. Jig’s Flow Diagram -------------------------------------- 34
5.6. P.C.B. Checking ------------------------------------------ 38
5.2. FUNCTIONS Description ------------------------------ 31
5.3. AGING MODE Description ---------------------------- 31
5.4. Setup Connection ---------------------------------------- 32
5.5. Jig’s Flow Diagram -------------------------------------- 34
5.6. P.C.B. Checking ------------------------------------------ 38
6 Exploded View and Replacement Parts List ----------- 39
6.1. Exploded View and Mechanical replacement
Parts List --------------------------------------------------- 39
2
1 Mechanism Overview (BRS1D)
BRS1 mechanism is a single tray mechanism used for CD/DVD models.
1.1.
Mecha Chassis Assembly / Tray / Traverse Unit
3
1.2.
Traverse Motor
4
2 Warning
2.1.
Prevention of Electro Static Discharge (ESD) to Electrostatically Sensi-
tive (ES) Devices
tive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-
trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage
caused by electrostatic discharge (ESD).
trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage
caused by electrostatic discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as alumin-
ium foil, to prevent electrostatic charge build up or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can
4. Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or compara-
ble conductive material).
ble conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution :
Caution :
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) suf-
ficient to damage an ES device).
ficient to damage an ES device).