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HP 1200 Service Manual - Page 132

Basic troubleshooting, Table 13.

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Basic troubleshooting Table 13. Basic troubleshooting # Verification steps Possible problems Solutions 1 Does the printer turn on successfully? When the product is connected to a grounded power source, the printer motor should rotate for approximately five seconds. No power. Printer motor does not rotate. 1. Verify that the product is plugged in. 2. Verify that the power cable is functional and that the power switch is on (220v only). 3. Verify that FU102 on the ECU is not open. 4. If all of these conditions are correct, replace the ECU. 1. Verify that the toner cartridge is present. (See "Toner cartridge" on page 78 for more information.) 2. Verify that the printer door is closed. 3. Verify that media is loaded in the main input tray. 4. Verify that the printer paper path and door sensors are functional. 5. Verify that the motor connector is seated into the ECU. 6. Verify that the motor is correctly mounted on the printer chassis. 7. If all of these conditions are correct, replace the ECU. 8. If, after replacing the ECU, the printer motor still does not rotate, replace the motor. 2 Is the product ready? The control panel should function without error light patterns. Control panel displays an error light pattern. Control panel is not functional. Consult the list of control panel light patterns later in this chapter to identify and correct the error. 1. Verify that the control panel cable is seated in the formatter. 2. If the cable is connected correctly, replace the control panel. 3 Do engine tests and self-test pages print? Print an engine test. (See page 149.)The engine test should print without paper-feed problems or print-quality problems. Note The formatter must be connected to perform an engine test. Engine test is not successful. Control panel displays an error light pattern. Replace the ECU. Consult the list of control panel light patterns in this chapter to identify and correct the error. Media does not move smoothly through the printer paper path. Isolate printer paper-path problems by performing a paper-path check, which is discussed later in this chapter. Poor print quality. See "Solving image-quality problems" on page 138. 130 Chapter 6 - Troubleshooting EN

Section	Page
Contents	5
Figures	9
Tables	13
Product information	15
Chapter contents	15
Introduction	16
Hardware description	16
Firmware description	17
Product specifications	18
Model and serial numbers	21
Overview of printer	22
Front and side view	22
Back and side view	23
Overview of optional copier/scanner	24
Top view	24
Warranty statement	25
Extended warranty	26
Toner cartridge information	27
Refilled toner cartridges	27
Recycling toner cartridges	27
Installation and operation	29
Chapter contents	29
Operating environment	30
Identifying printer components	31
Printer control panel	31
Control panel light patterns	32
Copier/scanner control panel	34
Selecting media	35
Selecting media to print	35
Selecting media to copy or scan	36
Loading media	37
Loading media to print	37
Loading media to copy or scan	38
Printer output paths	39
Maintenance	41
Chapter contents	41
Life expectancies of consumables	42
User-replaceable parts	42
Replacing the printer pickup roller	43
Replacing the printer separation pad	45
Replacing the copier/ scanner separation pad	47
Cleaning the equipment	48
Cleaning the print path	49
Cleaning the toner cartridge area	50
Cleaning the printer pickup roller	51
Cleaning the printer separation pad	52
Cleaning and recalibrating the copier/scanner	53
Cleaning the scanner path	53
Operational overview	55
Chapter contents	55
Basic functions	56
Formatter system	57
Control panel	58
Draft mode	58
MEt	58
Enhanced I/O	58
PJL overview	59
Printer functions	60
Engine control unit/power system	61
Image formation system	66
Printer paper-feed system	69
Jam detection	71
Optional copier/scanner	73
Optical system	73
Document pickup and feed systems	73
Basic sequence of operation (formatter-to- printer)	75
Removal and replacement	77
Chapter contents	77
Removal and replacement strategy	79
Required tools	79
Before performing service	80
Toner cartridge	80
Parts removal order	81
Covers	82
Left side cover	82
Optional copier/scanner	83
Back cover	84
Right side cover	86
Top cover	89
Control panel assembly	90
Front cover assembly	91
Internal assemblies	98
Transfer roller	98
Formatter	99
Laser/scanner assembly	101
Fuser assembly	103
Output rollers	107
Motor	109
Solenoid	110
Fan assembly	112
Right plate assembly	114
Pickup assembly	116
Pickup roller shaft	119
Paper lift plate assembly	120
Left plate assembly	121
Bottom assemblies	122
ECU pan	122
Paper-feed assembly	126
Troubleshooting	131
Chapter contents	131
Basic troubleshooting	132
Errors	134
Control panel light messages	134
Fatal error secondary messages	137
Checking the toner cartridge	139
Solving image-quality problems	140
Solving paper-feed problems	148
Solving print paper-feed problems	148
Solving copying and scanning paper-feed problems	150
Functional checks	151
Engine test	151
Half self-test functional check	152
Drum rotation functional check	153
Heating element check	154
High-voltage power supply check	155
Paper path check	157
Service mode functions	158
NVRAM initialization/cold reset	158
PJL software commands	158
Troubleshooting tools	161
Internal reports	161
Repetitive image defect ruler	163
Main wiring	164
Locations of connectors	166
Locations of LEDs, jumpers, and switches	167
Parts and diagrams	169
Chapter contents	169
Ordering parts and supplies	170
Parts	170
Related documentation and software	170
Consumables	170
Accessories	171
How to use the parts lists and diagrams	173
Common hardware	173
Assembly locations	174
Printer trays & optional copier/scanner	174
Covers	176
Internal assemblies	178
Internal components (1 of 2)	178
Internal components (2 of 2)	180
Electrical components	182
Paper pickup assembly (1 of 2)	184
Paper pickup assembly (2 of 2)	186
Fuser assembly	188
Alphabetical parts list	190
Numerical parts list	193
Index	197
Numerics	197
A	197
B	197
C	197
D	198
E	199
F	199
G	200
H	200
I	200
J	201
K	201
L	201
M	201
N	202
O	202
P	202
Q	204
R	204
S	204
T	205
U	206
V	206
W	206
Y	206

Match case Limit results 1 per page

130

Chapter 6 - Troubleshooting

Basic troubleshooting

Table 13.

Basic troubleshooting

Verification steps

Possible problems

Solutions

Does the printer turn

on successfully?

When the product is

connected to a grounded

power source, the printer

motor should rotate for

approximately five

seconds.

No power.

1. Verify that the product is plugged in.

2. Verify that the power cable is functional

and that the power switch is on (220v only).

3. Verify that FU102 on the ECU is not

open.

4. If all of these conditions are correct,

replace the ECU.

Printer motor does not

rotate.

1. Verify that the toner cartridge is present.

(See “Toner cartridge” on page 78 for more

information.)

2. Verify that the printer door is closed.

3. Verify that media is loaded in the main

input tray.

4. Verify that the printer paper path and

door sensors are functional.

5. Verify that the motor connector is seated

into the ECU.

6. Verify that the motor is correctly mounted

on the printer chassis.

7. If all of these conditions are correct,

replace the ECU.

8. If, after replacing the ECU, the printer

motor still does not rotate, replace the

motor.

Is the product ready?

The control panel should

function without error light

patterns.

Control panel displays an

error light pattern.

Consult the list of control panel light

patterns later in this chapter to identify and

correct the error.

Control panel is not

functional.

1. Verify that the control panel cable is

seated in the formatter.

2. If the cable is connected correctly,

replace the control panel.

Do engine tests and

self-test pages print?

Print an engine test. (See

page 149.)The engine

test should print without

paper-feed problems or

print-quality problems.

Note

The formatter must be connected to perform an

engine test.

Engine test is not

successful.

Replace the ECU.

Control panel displays an

error light pattern.

Consult the list of control panel light

patterns in this chapter to identify and

correct the error.

Media does not move

smoothly through the

printer paper path.

Isolate printer paper-path problems by

performing a paper-path check, which is

discussed later in this chapter.

Poor print quality.

See “Solving image-quality problems” on

page 138.