2020年12月24日 星期四

SmarTEAM 1200AT 調製解調器(Modem)PCB 板 - 拆解(二)

SmarTEAM 1200AT 調製解調器(Modem)PCB 板 - 拆解(二):

SmarTEAM 1200AT 調製解調器(數據機 / Modem / Modulator-demodulator)PCB 板尺寸 240mm × 130mm × 1.6mm,重量是 301g,PCB 板編號是 54-1052009,PCB 板是 1V-0 雙面板(Double Side PCB),生產日期估計在 1989年,生產廠商是 SmarTEAM (TEAM Technology Inc),台灣製造(Made in Taiwan)。

SmarTEAM 1200AT 調製解調器(Modem)PCB板
SmarTEAM 1200AT 調製解調器(Modem)PCB板的正面
SmarTEAM 1200AT 調製解調器(Modem)PCB 板的背面
拆解這台 SmarTEAM 1200AT 調製解調器(Modem),首先將調製解調器底的3顆十字螺絲拆除,3顆十字螺絲都是藏在標貼(WARRANTY VOID IF SEAL BROKEN)底,再將前後面板的鎖扣撬起,便可以拿出前後面板,PCB板是放置在鋁金屬殼的槽中間,輕易拉出 PCB 板。

SmarTEAM 1200AT 調製解調器(Modem)的螺絲位置
十字螺絲都是藏在標貼(WARRANTY VOID IF SEAL BROKEN)底
SmarTEAM 1200AT 調製解調器(Modem)的 3顆十字螺絲
SmarTEAM 1200AT 調製解調器(Modem)的前後面板鎖扣
SmarTEAM 1200AT 調製解調器(Modem)的 PCB板是放置在鋁金屬殼槽中間
SmarTEAM 1200AT 調製解調器(Modem)PCB 板上共有 24枚 IC(集成電路),Signetics SCN8039H DIP-40 封裝的 Single-Chip 8-Bit Microcontroller,Exar(艾科嘉)XR-2122CP DIP-28 封裝的 Demodulator,Exar(艾科嘉)XR-2121CP DIP-22 封裝的 Bell 212A Type Modulator,Exar(艾科嘉)XR-2120CP DIP-22 封裝的 PSK Modem Filter,Exar(艾科嘉)XR-2125P DIP-14 封裝的 Data Buffer。

Signetics SCN8039H DIP-40 封裝的 Single-Chip 8-Bit Microcontroller
Exar(艾科嘉)XR-2122CP DIP-28 封裝的 Demodulator
Exar(艾科嘉)XR-2121CP DIP-22 封裝的 Bell 212A Type Modulator
Exar(艾科嘉)XR-2120CP DIP-22 封裝的 PSK Modem Filter
Exar(艾科嘉)XR-2125P DIP-14 封裝的 Data Buffer
SmarTEAM 1200AT 調製解調器(Modem)PCB 板的 8顆 LED

產品 PCB板主要零件(BOM):

Type

Brand

P/N

Packaging

IC2 - Tone Dialer

UMC

UM9559F

DIP-16

IC3 - 8-Line To 1-Line Data Selectors / Multiplexers

Motorola

SN74LS151N

DIP-16

IC4 - Wide Input Voltage Low Power Audio Amplifier with Internal Gain

NS

LM386N

DIP-8

IC5IC6IC21 - Dual General-Purpose Operational Amplifier

TI

MC1458

DIP-8

IC7 - 2048-Bit Static MOS RAM with I/O Ports and Timer

Mitsubishi

M5L8155P

DIP-40

IC8 - Single-Chip 8-Bit Microcontroller

Signetics

SCN8039H

DIP-40

IC9 - 64K (8K x 8) UV Erasable PROM

SGS

M2764AFI

DIP-28

IC10 - Programmable Logic Array (PAL)

NS

PAL16R8A2NC (TEAM 211004)

DIP-20

IC11 - 8-Channel Multiplexer/Demultiplexe

Toshiba

TC4053BP

DIP-16

IC12 - Quad, 1MHz, Operational Amplifiers

RCA

CA324E

DIP-14

IC13 - Demodulator

Exar

XR-2122CP

DIP-28

IC14 - Bell 212A Type Modulator

Exar

XR-2121CP

DIP-22

IC15 - PSK Modem Filter

Exar

XR-2120CP

DIP-22

IC16IC20 - Quad Bilateral Switch

Toshiba

TC4066BP

DIP-14

IC17 - Quad Low-Noise JFET-Input General-Purpose Operational Amplifier

TI

TL074CN

DIP-14

IC18 - Hex Inverter

Toshiba

TC4069UBP

DIP-14

IC19 - Data Buffer

Exar

XR-2125P

DIP-14

IC22 - Optocoupler

GE

4N33

DIP-6

IC23 - Telephone Tone Ringer Drivers

TI

TCM1520AP

DIP-8

IC24 - Quad Line Receivers

NS

MC1489AP

DIP-14

IC25 - Quad Line Drivers

NS

MC1488P

DIP-14


2020年 12月 24日 天氣報告
氣溫:12.0@ 08:00
相對濕度:百分之 73%
天氣:多雲時陰

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