Table Of Contents - Panasonic SC-TM23 Service Manual

This service information is designed for experienced repair technicians only and is not designed for use by the general
public.
It does not contain warnings or cautions to advise non-technical individuals of potencial dangers in attemping to
service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt
to service or repair the product or products dealt with in this service information by anyone else could result in serious
injury or death.
1 Safety Precaution
1.1 Insulation Resistance Test
1.2 Caution for fuse replacement
2 Before Repair and Adjustment
3 Protection Circuitry
4 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
5 Handling the Lead-free Solder
5.1 About lead free solder (PbF)
6 Handling Precautions For Traverse Deck
7 Precaution of Laser Diode
8 Accessories
9 Operation Procedures
10 Disassembly and Assembly of Main Component 10.1
Disassembly flow chart
10.2 Gear for servicing (jig) Information
10.3 Disassembly of Top Cabinet
10.4 Disassembly of CD Lid
10.5 Disassembly of Rear Panel
10.6 Disassembly of CD Mechanism Unit
10.7 Disassembly of Main P.C.B.
10.8 Disassembly of Power P.C.B.
10.9 Disassembly of Transformer P.C.B.
10.10 Disassembly of Front Panel Unit
10.11 Disassembly of Deck Mechanism Unit
10.12 CD Mechanism Main Component Replacement
Procedures
10.12.1 Replacement of the Traverse Deck
10.12.2 Replacement for the Disc Tray
10.12.3 Disassembly and reassembly for mechanism
base drive unit
10.12.4 Replacement for the motor ass ' y
10.13 Replacement for the pinch roller ass ' y and head
block
10.14 Replacement for the Deck motor ass ' y, capstan
belt A, capstan belt B and winding belt
10.15 Replacement for the cassette lid ass ' y
10.16 Rectification for tape jam problem
11 Checking for major P.C.Bs
11.1 Checking of Main P.C.B.
11.2 Checking of Transformer P.C.B.
11.3 Checking of Panel, Deck & Deck Mechanism P.C.B.
11.4 Checking of Power P.C.B.
12 Self-Diagnostic Function
12.1 Self-diagnostic display
12.2 How to enter the Self-Diagnostic Function
12.3 Cassette Mechanism Test (For error code H01, H02,
H03, F01)
12.4 CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29,
F30, H15 & H16)
12.5 To clear all Error code
12.6 To exit from Self-Diagnostic function
12.7 Power Amplifier Failure (F61)
12.8 Description of Error Code
12.8.1 Abnormality detection for Deck Mechanism block
12.8.2 Abnormality detection for CD / Changer block
12.8.3 Power supply related error detection
12.8.4 Error Code (CR20 Mechansim)
WARNING
!
Contents
13 CD Test Mode Function
13.1 How to set CD test mode
13.2 CD Automatically Adjustment result indication
13.3 CD Mecha Aging Test Mode (CR20)
13.4 Micon ROM Checksum and Version Display Mode
14 Measurements and Adjustments
14.1 Cassette Deck Section
14.1.1 Tape Speed Adjustment (Deck 1 / 2)
14.1.2 Bias and Erase Voltage Check
14.1.3 Bias Frequency Adjustment (Deck 1 / 2)
14.2 Tuner Section
14.2.1 AM-IF Alignment
14.2.2 AM RF Adjustment
14.3 Alignment Points
14.3.1 Cassette Deck Section
14.3.2 Tuner Section
15 Block Diagram
16 Voltage Measurement
17 Schematic Diagram
17.1 (A) CD Servo Circuit
17.2 (B) Main (Tuner) Circuit
17.3 (B) Main Circuit
17.4 (C) Panel Circuit
17.5 (D) Transformer Circuit, (E) CD Detect Circuit, (F)
Spindle Position Circuit & (G) CD Loading Circuit
17.6 (H) Power Circuit
17.7 (I) Deck Circuit & (J) Deck Mechanism Circuit
18 Printed Circuit Board
18.1 (A) CD Servo P.C.B.
18.2 (B) Main P.C.B.
18.3 (C) Panel P.C.B.
18.4 (D) Transformer P.C.B.
18.5 (E) CD Detect P.C.B., (F) Spindle Position P.C.B., (G) CD
Loading P.C.B. & (K) Tuner Pack P.C.B.
18.6 (H) Power P.C.B.
18.7 (I) Deck P.C.B. & (J) Deck Mechanism P.C.B.
19 Wiring Connection Diagram
20 Illustration of IC ' s, Transistors and Diodes
21 Terminal Function of IC ' s
21.1 IC7002 (MN6627953HB) Servo processor / Digital signal
processor / Digital filter / D / A converter
21.2 IC7003 (AN8739SBTE2) Focus coil / Tracking coil /
Traverse motor / Spindle motor drive
21.3 IC2801 (C2CBJG000565) System Microprocessor
22 Troubleshooting Guide
23 Parts Location and Replacement Parts List
23.1 Deck Mechanism (RAA4502-S)
23.1.1 Deck Mechanism Parts Location
23.1.2 Deck Mechanism Parts List
23.2 CD Loading Mechanism (RD-DAC026-S)
23.2.1 CD Loading Mechanism Parts Location
23.2.2 CD Loading Mechanism Parts List
23.3 Cabinet
23.3.1 Cabinet Parts Location
23.3.2 Cabinet Parts List
23.4 Electrical Parts List
23.5 Packing Materials & Accessories Parts List
23.6 Packaging