Panasonic KX-TDA620BX Service Manual ▷ View online
6 DISASSEMBLY INSTRUCTIONS
6.1. DISASSEMBLY INSTRUCTION (BUS-S CARD)
1. Remove the Lid by sliding it in the direction of arrow 1.
2. This will be removed if the user attached a Pad Lock as shown in a
Fig.1.
3. Loosen the Screw.
4. Front Cover is removed in the direction of arrow 2.
2. This will be removed if the user attached a Pad Lock as shown in a
Fig.1.
3. Loosen the Screw.
4. Front Cover is removed in the direction of arrow 2.
5. Loosen the two Screws.
6. Remove the BUS-S Card.
6. Remove the BUS-S Card.
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KX-TDA620BX
6.2. DISASSEMBLY INSTRUCTION (BACK BOARD)
1. Remove four Screws (A).
2. Remove the Left Side Cover and the Right Side Cover.
2. Remove the Left Side Cover and the Right Side Cover.
3. Release the Hook and remove the Top Cover.
4. Remove nine Screws (B).
5. Remove the Back Cover.
5. Remove the Back Cover.
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KX-TDA620BX
6. Remove the FAN Connector and LED Connector from Back Board 1.
7. Remove eight Screws (C).
8. Remove Back Board 1.
7. Remove eight Screws (C).
8. Remove Back Board 1.
9. Remove the LED Connector from LED Board.
10. Remove the Screw (C).
11. Remove LED Board.
10. Remove the Screw (C).
11. Remove LED Board.
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KX-TDA620BX
7 OUTLINE
7.1. GENERAL DESCRIPTION
The TDA620 is a port expansion unit for the TDA600.
Control of the telephone operates as a PBX, control of the call path, and control of the power supply of the option card
contained in the shelf are done by the BUS-S card.
BUS-S, the option card, and power supply are connected each other through the backboard, and are connected to BUS-M
contained in the TDA600 with a bus cable.
The LPR card has a sub-processor, communicates with the CPU of BUS-S through DPRAM of the on board ASIC and controls
various terminals.
Control of the telephone operates as a PBX, control of the call path, and control of the power supply of the option card
contained in the shelf are done by the BUS-S card.
BUS-S, the option card, and power supply are connected each other through the backboard, and are connected to BUS-M
contained in the TDA600 with a bus cable.
The LPR card has a sub-processor, communicates with the CPU of BUS-S through DPRAM of the on board ASIC and controls
various terminals.
7.1.1. BUS-S Card
This card is a control card for the expansion shelf. It controls the option card contained in the expansion shelf according to the
instructions of EMPR.
On the BUS-S card are LEDs in two colors that indicate the status of the card and the bus cable connector for connecting to
the BUS-M card.
Card component outline:
•
instructions of EMPR.
On the BUS-S card are LEDs in two colors that indicate the status of the card and the bus cable connector for connecting to
the BUS-M card.
Card component outline:
•
•
•
• 32bit CPU
•
•
•
• SDRAMs, SRAM
•
•
•
• FLASH memory
•
•
•
• System TSW, Communication IC
•
•
•
• Lithium Battery for back-up of static RAM.
7.1.2. Back Board
BB is the motherboard of the expansion shelf.
This board connects the power supply to BUS-S and the option card.
This board connects the power supply to BUS-S and the option card.
7.1.3. Power Supply Unit
This unit is switching regulator power supply and supplies DC voltages to BUS-S card, and optional service card (free slot). PSU
(power supply unit) has four outputs (40V, 30V, 15VPT, 15V). 15V output is supplied only in BUS-S card and option card. Other
outputs are mainly used as an object for the electric supply to a terminal. Refer to each S/M for the details of PSU.
(power supply unit) has four outputs (40V, 30V, 15VPT, 15V). 15V output is supplied only in BUS-S card and option card. Other
outputs are mainly used as an object for the electric supply to a terminal. Refer to each S/M for the details of PSU.
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KX-TDA620BX
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