Hitachi（日立）VT-498EM VCR（盒式磁帶錄像機 / Video Cassette Recorder） 錄影機高頻訊號處理板（RF Signal Processing Board）尺寸為 280mm × 175 / 183mm × 1.6mm，重量有 242g（不包括高頻頭），單面 HTK-5V 板（Single Side PCB），PCB編號是 150042，生產廠商是 SSA，生產時間 P0201（估計在 1991年）。
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| Hitachi VT-498EM VCR 錄影機高頻訊號處理板（RF Signal Processing Board）的正面 |
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| Hitachi VT-498EM VCR 錄影機高頻訊號處理板（RF Signal Processing Board）的背面 |
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| Rohm（羅姆電子）BA7755 SIP-5 封裝的 High-voltage Audio Head Selection Switch |
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| Sanyo（三洋電機）LA7016 SIP-8 封裝的 Electonic Switch for Use in VTR Application |
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| Sanyo（三洋電機）LA7016 SIP-8 封裝的 Electronic Switch for Use in VTR Application |
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| Hitachi（日立）HD49719NT DIP-64 封裝 IC |
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| Mitsubishi（三菱電機）M54874P DIP-32 封裝 IC |
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| Hitachi（日立）HA13403VA SP-23TB 封裝的 Three Phase Brushless Motor Driver |
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| 3枚 Rohm（羅姆電子）BU4053B DIP-16 封裝的 Triple 2-channel analog multiplexer / demultiplexer |
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| Rohm（羅姆電子）BA6303 DIP-16 封裝的 FG System Speed Servo Controller |
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| Sanyo（三洋電機）LA7935 DIP-22 封裝的 Tuner Decorder IC |
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| JRC（日本無線株式會社）LM2903D DIP-8 封裝的 Low Power Dual Voltage Comparator |
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| NEC（日本電氣）D4066BC DIP-14 封裝的 14-Stage Ripple-Carry Binary Counter/Divider and Oscillator |
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| Rohm（羅姆電子）BA6209 SIP-10 封裝的 Reversible Motor Driver |
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| Rohm（羅姆電子）BA6993 SIP-8 封裝的 Dual Comparator |
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| Hitachi（日立）HD614088S DIP-64 封裝的 4-Bit Single Chip Microcomputer |
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| HT4603-9B09 SIP-9 封裝 Module |
Type
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Brand
|
P/N
|
Packaging
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IC401 - High-voltage Audio Head Selection Switch
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Rohm
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BA7755
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SIP-5
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IC402 - Normal Audio Signal Processings
|
Rohm
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BA7751A
|
SIP-24
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IC461 - Electonic Switch for Use in VTR Application
|
Sanyo
|
LA7016
|
SIP-8
|
IC601 - ?
|
Hitachi
|
HD49719NT
|
DIP-64
|
IC602 - ?
|
Mitsubishi
|
M54874P
|
DIP-32
|
IC603 - Three Phase Brushless Motor Driver
|
Hitachi
|
HA13403VA
|
SP-23TB
|
IC605 - Triple 2-channel analog multiplexer / demultiplexer
|
Rohm
|
BU4053B
|
DIP-16
|
IC606- Triple 2-channel analog multiplexer / demultiplexer
|
Rohm
|
BU4053B
|
DIP-16
|
IC607- Triple 2-channel analog multiplexer / demultiplexer
|
Rohm
|
BU4053B
|
DIP-16
|
IC608 - FG System Speed Servo Controller
|
Rohm
|
BA6303
|
DIP-16
|
IC801 - Tuner Decorder IC
|
Sanyo
|
LA7935
|
DIP-22
|
IC802 - Low Power Dual Voltage Comparator
|
JRC
|
LM2903D
|
DIP-8
|
IC803 - 14-Stage Ripple-Carry Binary Counter/Divider and
Oscillator
|
NEC
|
D4066BC
|
DIP-14
|
IC901 - 4-Bit Single Chip Microcomputer
|
Hitachi
|
HD614088S
|
DIP-64
|
IC902 - Reversible Motor Driver
|
Rohm
|
BA6209
|
SIP-10
|
IC903 - Dual Comparator
|
Rohm
|
BA6993
|
DIP-8
|
IC951 - Module
|
?
|
HT4603-9B09
|
SIP-9
|
相關網址：
※ Hitachi VT-498EM VCR 錄影機拆解（一）
※ Hitachi VT-498EM VCR 錄影機機芯拆解（二）
※ Hitachi VT-498EM VCR 錄影機 VFD 顯示板拆解（三）
※ Hitachi VT-498EM VCR 錄影機電源供應器拆解（四）
※ Hitachi VT-498EM VCR 錄影機訊號處理板拆解（五）
2019年 11月 13日 天氣報告
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