Detailed Section Descriptions; Initialization - Ricoh IS450S Service Manual

22 December 1998

2. DETAILED SECTION DESCRIPTIONS

2.1 INITIALIZATION

Power on
1 Is the memory OK?
Yes
Initialize the I/O port, E
2
IPU, and memory controller
Initialize the scanner motor
3
Is the
4 home position check
O K ?
Yes
Adjust the black level
5
Turn on the lamp
6
Scan the white plate
Is the
7 white level within specified
value?
Yes
Were there any
8
shading, or lamp, errors?
No
Are the
9
ADF or the document feeder
cover closed?
Yes
Endorser motor turns on for 0.1s
10
Is any
11 one of the feed, read, or feed-
out sensors on?
No
Is there
12 any paper on the document
table?
Yes
Detects document
N o User Level: System error User Level: System error
Service Level: Memory error Service Level: Memory error
2 P R O M ,
N o
Home position error
N o
Y e s
initialization procedure been
tried three times?
N o
ADF open error
Y e s
N o Is the document
table working properly?
2-1
Lamp error
14
No
Has the
Y e s Use the default value of the white
Paper jam
13
N o
Yes
R E A D Y
INITIALIZATION
and black levels
Document table error
G411D503.WMF