NAD T744 Service Manual page 59

Reference No.
KEY BOARD AND LED BOARD
PCB ASSEMBLY
KEY BOARD
PCB ASSEMBLY
CAPACITORS
C212
C255,C258
C214
C211,C210,C209,C208
DIODES
D212,D214-D218
D220
IR
D201
TRANSISTORS
Q204,Q205,Q203,Q206
Q201
ENCODER
M201
TACT SWITCHES
S201-S216,S218
VFD
VD201
CRYSTALS
X201,X202
ICS
U210
U202
U201
U208
U209
U204-U207
U203
U214
Database Part No. Description
T744 KEYBOARD AND LED ASSEMBLY
50-951-0744-90
27-922-0744-90 T744AH (US) Keyboard Board Assembly
03-002-0135-00 CAP ELEC GS 1000uF 10V 20% 85C RAD ST5
CAP ELEC SS 1uF 50V 20% 85C RAD HEIGHT=
03-002-0137-00
7mm MAX
03-002-0138-00 CAP ELEC SS 0.1uF 50V 20% 85C RAD
CAP ELEC SS 47uF 16V 20% 85C RAD HEIGHT =
03-002-0143-00
7mm MAX
04-001-0001-00 DIODE SW 4NS DO35 1N4148
DIODE ZENER BZX79 5.1V 1/2W 5% DO35 BZX79-C
04-002-0040-00
5.1V
04-004-0008-91 IR RX 940nm 37.9KHz SHIELD ST PIC-37143TE5-H
05-001-0072-00 XTR SS NPN HEF 100 200MHz TO-92 C1815Y
05-001-0080-00 XTR SS PNP HFE 100 200MHz TO-92 A1015Y
ENCODER ROTATRY STD L=20MM VERT. W/O
06-006-0009-90
CLICK EC162102F2B-HA1-002
11-007-0060-90 SW TACT NO 1P1T 50mA/12V VER H=7mm
12-005-0028-00 VFD 16-BT-132-GNK 16 GRIDX36 ANODE 2
CRYSTAL 20.000MHz 30ppm 32pF HC-49/S 01-
14-002-0023-00
CR1-02-20M000-32-3030
IC EEPROM 2K BYTE 250nS PDIL ENDURANCE AT
01-002-0053-00
24C16
IC MCU 8 Bit 16KROM 1024 Byte Xram Plcc
01-010-0022-00
AT89C51RB2-SL
IC MCU 8 BITS 64K ROM 1792 BYTES RAM PLCC
01-010-0023-00
AT89C51RD2
IC LOGIC 8-CHANNEL ANALOG MUX/DEMUX SMD
01-012-0062-00
74HC4051D
IC LOGIC OCTAL BUS TRANSCEIVER 3-STATE SOP
01-012-0064-00
74AHC245D
IC LOGIC 8-STAGE SHIFT-AND-STORE BUS
01-012-0065-00
REGISTER SMD SO16 HEF4094BT
01-015-0004-00 IC VFD DRIVER SMD QFP PT6306
IC MICROCONTROLLER RESET MONITORS
01-026-0002-90
MAX810LTR
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