Motorola ASTRO Digital Spectra Plus Service Manual page 220

5-4
Control Head Display: "FAIL 01/82"
"FAIL 01/84"
"FAIL 01/88"
START "FAIL 01/02"
Replace and/or
Reprogram
VOCON Board.
(See Note 2)
Is
No External EE Memory
Problem
or VOCN Board
Corrected?
Faulty.
Yes
Reprogram or Problem Is
Replace VOCON
RPCIC
Board (See Note 2). Regulators.
Control Head Display:
"FAIL 01/81"
Error In
VOCON Board.
Replace Board
(See Note 2).
Problem Is
SIOIC
Circuits.
LEGEND
U522 - Serial Input/ Output IC
U500 - Regulator Power Control IC (RPCIC)
HLN6458- VOCON Board
U525 - MUX Gate
Clear
Failed Area.
Yes
Check 9.6V
No
Input Shorted?
U522-14.
Yes
Volume Problem
In U522.
High?
No
Check R526
or C511.
Chart C.2 Command Board
October 28, 2002
Note 1: See Control Head Troubleshooting Chart In Spectra Detailed Service Manual.
Note 2: See VOCON Board Troubleshooting Chart.
Control Head Display: "FAIL 01/90" or Blank
START
Check Voltages -
UNSW +5V, SW +5V,
+9.6V.
Check
No
Replace
Voltages
RPCIC Enable
RF Board.
OK?
At U522-15.
No
Yes
Check VOCON Board
Yes
Logic
Address/Data
Ok?
Low?
Activity.
No
Check Res Check "ODC"
Yes
SWB+ Activity?
Output (2.4MHz)
U522-28. P501-7.
No
Check POR
Yes
Logic
Reset
High?
P501-29.
No
Problem Is Check +5VDC
Yes
Logic
With SWB+ P501-33, 34.
High?
Circuit. and 37.
No
Check Reset
+5V
U522-40.
Correct?
No
No Problem Is
Check Q403
Logic
L510, L511, or
For Shorts. High?
L512
Yes
Replace Problem Is In
VOCON Board
VOCON Board
(See Note 2). (See Note 2).
Check Busy In
P501-20
(Press Control
Head Button).
Yes
Activity?
No
Check RX Data
Check Busy Out
Yes
U501-17 P501-19
(Press Control
(Press Control
Head Button). Head Button).
Yes Yes
Activity? Activity?
No No
Check TX Data
Problem Is In
P501-18
VOCON Board.
(Press Control
(See Note 2)
Head Button).
No
Activity?
Yes
Check U522-19
Yes
(Press Control
Head Button).
Check BUS+/-
Yes
P502-25, 22
Activity?
(Press Control
Head Button).
No
Problem Is
Yes
Activity?
C584 or JU523.
No
Problem Is
U522, C821, C822,
C870, or C861.
Check U522-13
(Press Control
Head Button).
No
Check
See Note 1. Activity?
P501-19.
Yes
Check P502-9
(Press Control
Head Button).
No
Problem Is
Activity?
With U522.
Yes
Check U522-11
(Press Control
Head Button).
No Yes
Problem Is Problem Is
Activity?
With U522. With R578.
No
Check U525-14
Yes
Activity?
(Press Control Activity?
Head Button).
No
Check U525-11
For +5 Volts.
Check U522-20
Logic
(Press Control
High?
Head Button).
No
Problem Is
Q509 or VR401.
Troubleshooting Charts
Problem Is
With Vocon Board
(See Note 2).
No
Activity?
Yes
Problem Is
With R579 or
SIOIC.
Yes Problem Is
C585 or
JU524.
Yes
Problem Is
U525.
MBEPF-25191-O
6881076C25-D