Motorola ASTRO Digital Spectra Plus Service Manual page 293

Schematics, Component Location Diagrams and Parts Lists: VOCON Section
MOTOROLA
ITEM DESCRIPTION
PART NUMBER
U211 5105279V65 AND Gate
U214 5105279V65 AND Gate
U401 - - - - - Not Placed
U402, 403 5105329V12 8k x 24 DSPRAM
U404 5105625U73 FLASH (TSOP)
U405 5105457W70 Digital Signal Processor
U406 5105457W19 ADSIC (ABACUS/DSP Support IC)
U407 5105492X73 Voltage Detector XSX
U408 thru 412 - - - - - Not Placed
U414 5105329V12 8k x 24 DSPRAM
U415 5105492X05 OR Gate
U416 - - - - - Not Placed
DIODE: See Note 1.
VR201 thru 203 4813830A15 Zener, 5.6V
VR204, 205 - - - - - Not Placed
VR206 4813830A31 Zener, 18V
VR207 4813830A22 Zener, 9.1V
VR208 4813830A24 Zener, 11V
VR209 4813830A15 Zener, 5.6V
VR210 - - - - - Not Placed
VR211 thru 214 4813830A15 Zener, 5.6V
VR215 thru 223 - - - - - Not Placed
CRYSTAL: See Note 2.
Y201 4805574W01 7.3728MHz
Y401 4805573W01 33MHz
MISCELLANEOUS:
8405160Y02 Printed Circuit Board
Notes:
1. For optimum performance, order replacement diodes, transistors, and circuit
modules by Motorola part number only.
2. When ordering crystals, specify carrier frequency, crystal frequency, crystal
type number, and Motorola part number.
3. Part value notations:
-12
p=10
-9
n=10
-6
µ=10
-3
m=10
3
k=10
6
M=10
4. ITEM refers to the component reference designator. SIDE refers to the loca-
tion of the component on the board; S1=Side 1, S2=Side 2.
5. The VOCON Board Kit uses a 6-layer printed circuit board.
6-LAYER CIRCUIT BOARD DETAIL VIEWING
COPPER STEPS IN PROPER LAYER SEQUENCE
SIDE 1
LAYER 1 (L1)
LAYER 2 (L2)
LAYER 3 (L3)
INNER LAYERS
LAYER 4 (L4)
LAYER 5 (L5)
LAYER 6 (L6)
SIDE 2 MAEPF-18827-A
6881076C25-D
7-37
October 28, 2002