Panasonic KX-FT21RS Service Manual ▷ View online
KX-FT21RS
(Russia)
PARSONAL FACSIMILE
ORDER NO. KM79911336C3
1
INTRODUCTION
3
1.1.
SAFETY PRECAUTIONS
3
1.2.
INSULATION RESISTANCE TEST
3
1.3.
FOR SERVICE TECHNICIANS
3
1.4.
BATTERY CAUTION
3
1.5.
AC CAUTION
4
1.6.
PERSONAL SAFETY PRECAUTIONS
5
1.7.
FEATURES
6
1.8.
SPECIFICATIONS
7
1.9.
OPTIONAL ACCESSORIES
7
1.10. CCITT No. 1 TEST CHART
8
1.11. LOCATION OF CONTROLS
9
1.12. CONNECTIONS
10
1.13. INSTALLATION
11
1.14. MAINTENANCE ITEMS AND COMPONENT LOCATIONS
14
2
TROUBLESHOOTING GUIDE
18
2.1.
TROUBLESHOOTING SUMMARY
18
2.2.
USER RECOVERABLE ERRORS
19
2.3.
TROUBLESHOOTING DETAILS
21
2.4.
PROGRAMMING AND LISTS
74
2.5.
TEST FUNCTIONS
79
2.6.
JOURNAL 3
81
3
ADJUSTMENTS
83
3.1.
ADJUSTING THE FEED PRESSURE
83
4
DISASSEMBLY INSTRUCTIONS
84
5
HOW TO REPLACE THE FLAT PACKAGE IC
95
5.1.
PREPARATION
95
5.2.
FLAT PACKAGE IC REMOVAL PROCEDURE
95
5.3.
FLAT PACKAGE IC INSTALLATION PROCEDURE
96
5.4.
BRIDGE MODIFICATION PROCEDURE
96
6
CIRCUIT OPERATIONS
97
6.1.
CONNECTION DIAGRAM
97
6.2.
GENERAL BLOCK DIAGRAM
98
6.3.
CONTROL SECTION
100
6.4.
FACSIMILE SECTION
109
6.5.
SENSORS AND SWITCHES
119
6.6.
MODEM SECTION
122
6.7.
Analog Unit Block Diagram
129
6.8.
NCU SECTION
130
6.9.
ITS (Integrated telephone System) and MONITOR
SECTION
132
6.10. EXT. TEL
133
6.11. OPERATION PANEL
135
6.12. POWER SUPPLY BOARD SECTION
137
7
FOR THE SCHEMATIC DIAGRAMS
140
8
PRINTED CIRCUIT BOARD
141
8.1.
PRINTED CIRCUIT BOARD (DIGITAL BOARD):
COMPONENT VIEW
141
8.2.
PRINTED CIRCUIT BOARD (DIGITAL BOARD): BOTTOM
VIEW
142
8.3.
PRINTED CIRCUIT BOARD (ANALOG BOARD):
COMPONENT VIEW
143
8.4.
PRINTED CIRCUIT BOARD (ANALOG BOARD):
BOTTOM VIEW
144
8.5.
PRINTED CIRCUIT BOARD (SWITCHING POWER
SUPPLY)
145
8.6.
PRINTED CIRCUIT BOARD (OPERATION BOARD) 146
9
SCHEMATIC DIAGRAM
147
9.1.
SCHEMATIC DIAGRAM (DIGITAL CIRCUIT)
147
9.2.
SCHEMATIC DIAGRAM (ANALOG CIRCUIT)
148
9.3.
SCHEMATIC DIAGRAM (SWITCHING POWER SUPPLY)
149
9.4.
SCHEMATIC DIAGRAM (OPERATION CIRCUIT)
150
10 TERMINAL GUIDE OF THE IC
·
S TRANSISTORS AND DIODES
151
11 FIXTURES AND TOOLS
152
12 CABINET, MECHANICAL AND ELECTRICAL PARTS
LOCATION
153
12.1. OPERATION PANEL SECTION
153
12.2. UPPER CABINET SECTION
154
12.3. LOWER CABINET/P.C.B. SECTION
155
12.4. MOTOR SECTION
156
12.5. ACTUAL SIZE OF SCREWS AND WASHER
157
13 ACCESSORIES AND PACKING MATERIALS
158
14 REPLACEMENT PARTS LIST
159
14.1. CABINET AND ELECTRICAL PARTS
159
14.2. DIGITAL BOARD PARTS
160
14.3. ANALOG BOARD PARTS
162
14.4. OPERATION BOARD PARTS
164
14.5. POWER SUPPLY BOARD PARTS
165
14.6. FIXTURES AND TOOLS
166
CONTENTS
Page
Page
2
KX-FT21RS
1 INTRODUCTION
1.1. SAFETY PRECAUTIONS
1. Before servicing, unplug the AC power cord to prevent an electric shock.
2. When replacing parts, use only the manufacturer´s recommended components.
3. Check the condition of the power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent
the customer from being exposed to shock hazards.
1.2. INSULATION RESISTANCE TEST
1. Unplug the power cord and short the two prongs of the plug with a jumper wire.
2. Turn on the power switch.
3. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part (screw
heads, control shafts, bottom frame, etc.).
Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.
4. If the measurement is outside the specified limits, there is a possibility of a shock hazard.
The equipment should be repaired and rechecked before it is returned to the customer.
1.3. FOR SERVICE TECHNICIANS
ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover the plastic part´s boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on the worktable.
4. Do not touch the IC or LSI pins with bare fingers.
1.4. BATTERY CAUTION
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacture. Dispose of used batteries according to the
manufacturer´s instructions.
manufacturer´s instructions.
3
KX-FT21RS
1.5. AC CAUTION
For safety, before closing the lower cabinet, please make sure of the following precautions.
4
KX-FT21RS
