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施乐 富士施乐 DP M255 M255Z M255DF 英文维修手册
2.1.4 Cautions on Using FIP
1 In the initial check according to the FIP, check only items which can be simply checked.
2 In the initial check according to the FIP, check the constitutive parts of the major check parts and related parts, as well as major check parts.
3 When working with the printer, be sure to remove the power cord unless otherwise required.
Never touch live parts if not required, while the power cord is connected.
4 Connector condition is denoted as follows:
[P/J12] -> Connector (P/J12) is connected.
[P12] -> Plug side with the connector (P/J12) removed (except when attached directly to the board).
[J12] -> Jack side with the connector (P/J12) removed (except when attached directly to the board).
5 [P/J1-2PIN <=> P/J3-4PIN] in the FIP means measurement with the positive side of the measuring
instrument connected to [2PIN] of [P/J1] and the negative side to [4PIN] of [P/J3].
6 [P/J1<=> P/J2] in the FIP means measurement for all terminals corresponding between [P/J1] and [P/J2] based on “Wiring Diagrams”.
7 In [P/J1-2PIN <=> P/J3-4PIN] in the FIP where voltage is measured, [P/J3-4PIN] on the rear negative
side is always at the AG (analog ground), SG (signal ground), or RTN (return). Therefore,after checking of proper conductivity between AGs, SGs, or RTNs respectively, the rear negative side can be connected to the PIN of AG, SG or RTN instead of [P/J3-4PIN].
However, care should be taken not to confuse [AG], [SG], and [RTN] because they are not on the same level.
8 When measuring the voltage at small connectors, use the dedicated tool. Handle the tool with
care because its business end is pointed.
9 When measuring the voltage, set the toner cartridge and tray, close the COVERs and power ON
unless otherwise required.
10 Numerical values in the FIP are only for guideline. Approximate values are acceptable.
11 In each step of the FIP, parts removal and other procedures implicitly required for the step are omitted.
12 In the FIP, "Replacement" means the replacement of the parts that are considered to be the cause of the trouble. Replacement of those parts means the replacement of the assembly part(HIGH ASSY) that contain them.
13 Some of the instructions in the FIP are branched off depending on the specifications. Follow the applicable instruction.
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