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Technical Product Manual
Fault analysis and repairs 1318
7 Wiring diagrams, fault analysis
TU00-1318-0200302 © Siemens VDO Trading GmbH Section 7 7–13
Section 7: Wiring diagrams, fault analysis • Edition 12/2005
Error Component 1 Component 2
Component 1 voltage check Troubleshooting Resistance check Component 2 Troubleshooting
Measurin
g point
colour
Conductor
no. ()
12 V unit 24 V unit
Component 1 Visual check Component 2 Component 2
n= 0 rev/
min
n= 2000 rev/
min
v = 0 km/h n= 2000 rev/
min
Faulty RPM display H
v board
F
n board
Flat cable from H v
board to F
n board
Flat cable
18 ... 33 see component 2
Measuring value between v board and n board: 0 Ω Faulty measuring value.
Replace flat cable, check socket connector
contacts on v and n boards.
F
n board
B
DC motor
RPM
Flat cable
r 5 +
bk 4 +
((9))
((7))
0 V 2.3 ... 3.2 V 0 V 2.3 ... 3.2 V
Measuring value between points 4 and 5 (flat cable): 50 Ω ((7)) ((9)) Faulty measuring value.
Unsolder r and bk wire from lamp plate A and
repeat resistance measurement.
C
Potentiometer
Resistor
RPM
Flat cable
p 1 + ((1))
5.4 V 5 ... 6.2 V
Remove flat cable from v board.
Measuring value between points 1 and 2 (flat cable): 5 kΩ / ((1)) ((3))
Faulty measuring value.
Unsolder p, wt and wtr wires from lamp plate A
and repeat resistance measurement.
wsrt 3 + ((5)) 5.3 V 4.6 V 5.5 V 4 ... 4.8 V Measuring value between ((3)) and ((5)) wires: 600 Ω ... 5 kΩ.
The resistance value must increase and decrease steadily when adjusting the RPM
stylus lever slowly.
wt 2 + ((3))
3.8 V 2.8 ... 4.1 V
Flat cable from H v
board to A lamp
plate
Flat cable
1 ... 16 see component 2
Measuring value between v board and lamp plate: 0 Ω Faulty measuring value. Replace n board.
(Socket connector)
F
n board
G
Coding switch see component 2
Measuring device's negative pole to point 52 (underside of n board. Measuring
value between points 42 and 52 if switch set to "ON": 0 Ω.
Measuring value if switch set to "OFF": > 1.5 kΩ
Faulty measuring value. Replace n board.
H
v board
E
n test socket bl 17
Measuring value between test socket and v board 0Ω. Faulty measuring value. Replace cable.
External
n warning contact
defective
H
v board
D
n warning contact
Flat cable
7 + ((13))
0 V 12 V 0 V
24 V
(n max)
Faulty measuring value.
Unsolder ye wire from lamp plate.
Measuring value on ye wire and point 7 ((13))
:
not switched: :Ω
switched: 0Ω
to connector output C8
0 V 12 V 0 V
24 V
(n max)
ye 6 + ((11))
12 V 24 V
Apply a 0 V potential to A6 tab connector for the measuring device.
+ = Connect measuring device's positive cable. Measuring tolerance: ± 10 %
Measuring device: Multimeter –accuracy class 1.5 (>30.000 Ω /V)
= Visually check mechanical parts. = If defective, replace component 1 part (n board). = If defective, replace component 2 part.
=
Visually check electrical cables, components, soldered connections,
conductors and plug contacts.
= Measure ohmic resistance. (( )) Conductor no., 16-pin flat cable
=
Check gear engagement and that the gears from the DC motor to the
potentiometer are running freely.
= Remove flat cable.
= If defective, check, adjust or replace the relevant components. = Remove unit.
- Fault analysis and repairs 1
- NEC Tachographs/ 1
- EC Tachographs 1318 1
- Table of contents 3
- Section 8 Lubrication charts 10
- List of illustrations 11
- Section 1 General notes 17
- 1 Contents 18
- 1 General notes 19
- 1.1 History - 1318 19
- 1.2 Preparing repairs 19
- 1.3 Repair hints 20
- 1.4 Workbench setup 21
- 2 Contents and assignment 24
- 2.2 Type plaque labelling 30
- 2.3 Removing front parts 31
- 2.3.2 Replacing dial glass 32
- 2.3.3 Lock cylinder 33
- 2.5.1 Speed indicator 36
- 2.5.2 RPM indicator 36
- 2.5.3 Clock hands 37
- 2.7 Flat cable 42
- 2.7.2 Fitting flat cable 43
- 2.8 n measuring system 46
- 2.8.7 Checking DC motor 50
- 2.9 Quartz mechanism 52
- 2.9.3 Replacing gears 53
- 2.9.5 Speed shaft 57
- 2.10 Cover contact 58
- 2.10.2 Checking cover contact 59
- 2.11.3 Fitting n stylus lever 62
- 2.12.2 Making auxiliary bezel 68
- 0.2 70
- 2.12.6 Fitting clock hands 71
- 2.12.8 Fitting bezel 72
- 2.13.1 Removing cover plate 73
- 2.13.2 Pulling out knobs 74
- 2.14 Distance recorder 75
- 2.15.1 Fitting knobs 78
- 2.15.1.2 Inserting knobs 79
- 2.15.2 Cover plate versions 80
- Section 2 2–59 81
- Cover plate Device type 81
- 2.15.3 Fitting cover plate 82
- 2.16.1 Fitting stylus guide 83
- 2.17.3 Separating plate 87
- 2.18.1 Replacing cover 88
- 10.85 mm (before 11.5 89
- 2.18.3 Replacing cover strap 90
- 3 Contents and assignment 94
- Removing and fitting housing 100
- 3.1 Housing – overall view 101
- 3.2 Removing hood 102
- 3.2.3 Removing fixing cap 103
- 3.2.4 Removing hood 103
- 3.3 Removing socket housing 104
- 3.5 v/ n board identification 106
- 3.6 v board 107
- 1318.71.400.03 110
- 1318.71.400.11 112
- 1318.71.400.12 112
- 318.71.800.10 113
- 3.7 n board 114
- 1318.0210.103.xxx 115
- /1318.71.300.xx 115
- 1318.71.300.xx 115
- 1318.71.900.10 116
- Technical Product Manual 117
- 3.8 Removing frame 118
- 3.8.3 Removing stylus unit 120
- *discontinued 122
- 3.8.5.1 Removing gears 125
- 3.8.5.2 Installing gears 126
- 3.9.1 Removing drive parts 129
- 3.9.2 Fitting stylus holder 129
- 3.10 Speed measuring system 134
- 3.10.3.1 Checking motor 137
- 3.10.4.1 Pull contacts 138
- 3.10.4.2 Fitting contacts 138
- 3.10.5 Speed measuring system 139
- 3.11 Distance/ WT motor 140
- Back until 09.87 141
- Front until 09.87 141
- 0.15 mm thick 145
- 3.14 Fitting frame plate 149
- Tension spring (12) on front 151
- 3.15.1 Replacing grip head 154
- 3.16.1 Fitting the frame 155
- 3.16.1.2 Installing frame 156
- 3.16.4 Fitting n board 158
- 3.16.5 Fitting v board 159
- Back of frame plate 160
- Driver 1 160
- Driver 2 160
- 3.16.7 fixing v and n boards 162
- 6 ± 0.25 164
- 3.17 Data output – data block 168
- Section 4 Checking and 169
- 4 Contents and assignment 170
- (from 01.02) 171
- 4.2.1 Checking speed stylus 172
- 1318-02, -04, -06 177
- 1 1900.1501.054.030 179
- 1 1900.1501.054.090 181
- Checking and adjusting 184
- 1 1900.1501.064.000 186
- 4.10 Function check 192
- Section 5 Sealing points 193
- 5 Contents and assignment 194
- 5.3 Fixing cap versions 196
- 5.4.1 Embossing seals 197
- 5.4.2 Fitting seal caps 198
- 5.4.3 Fitting bezel seal 198
- Sealing points 200
- Additional equipment 201
- 6 Contents and assignment 202
- 6.1.1 Recording widths 205
- 6.1.2 Repair hint 205
- 6 Additional equipment 208
- A1 (+) / A5 (-) 210
- 6.3.6 Checking stop signal 211
- 6.4.1 Function 212
- Level 1: Level 2 212
- 6.4.2 Control 213
- 6.4.4 Checking recording 214
- Section 6 6–15 215
- 1 Straight pin 2 Bearing 215
- 1 day unit: x = 24.5 mm 216
- 7-day unit: x = 28.5 mm 216
- 6.4.6 Clock generator 2154.02 217
- 6.4.6.2 Wiring diagram 218
- Section 6 6–19 219
- 12 V and 24 V 220
- RPM display 221
- 6.5.1 Adjusting 222
- 6.5.2 RPM constant label 222
- (connector D5) 223
- Section 7 Wiring diagrams 229
- 7.2 Colour codes 231
- EC and CH 242
- Bridge for checking only 244
- Bridge Bridge 244
- Lubrication charts 248
- 8 Lubrication charts 250
- 8.2 Distance counter 251
- 8.5 Frame: v measuring system 252
- Section 8 8–7 253
- Fig. 8-5 Front of frame 253
- Do not lubricate! 254
- 8.8 Frame: Driver 2 lever 255
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