Technics SL-DZ1200PP User Manual

8.2. Checking for the main P.C.B.
- Follow the (Step 1) - (Step 3) of item 8.1.
- Check the main P.C.B. (A side) as shown below.
- Check the main P.C.B. (B side) as shown below.
8.3. Checking for the jack P.C.B.
- Follow the (Step 1) - (Step 3) of item 8.1.
10

Technics SL-DZ1200PP Specifications

General

Brand	Technics
Model	SL-DZ1200PP
Category	Turntable
Language	English

Summary

Safety Precaution

Insulation Resistance Test

Test procedure to prevent shock hazards, involving resistance measurement.

Caution for AC Mains Lead

Handling Precautions for Optical Pick-up

Precaution of Laser Diode

Accessories

Operation Checks and Component Replacement Procedures

Checking for the control panel (1) P.C.B. and control panel (2) P.C.B.

Procedures for checking the control panel PCBs.

Technological Explanation of the Circuit and Signal

Self-diagnosis Function

10.1. DEVICE TEST

Performing ROM/RAM/E2PROM and CD/SD interface diagnostics.

10.2. TT BRAKE TEST

Testing turntable brake performance by measuring stopping time and angle.

10.3. TT SPEED (Phase) TEST

Testing turntable speed stability and phase deviation under different tempo settings.

10.4. SW&LED TEST

Verifying switch and LED operation by pressing buttons and observing light responses.

10.5. LED TEST

Testing LED functionality using LCD display and page switching buttons.

10.6. SD SAVE/LOAD

Inspecting SD card save and load operations, checking for OK/NG status.

10.7. INITIAL

Initializing the unit to factory preset values, including CUEPAD, LOOP, and AUTOCUE settings.

10.8. CD UNIT TEST 1

Testing CD unit by playing first/last titles and automatic reloading.

Cautions after Exchange of the Flash ROM (IC23)

11.1. Program Writing to the SD Card

Procedures for writing programs to SD cards, including file naming and formatting requirements.

11.1.1. Method of Program Download

Steps to download program files from the TSN SYSTEM via URL.

11.2. Program Writing to the Flash ROM (IC23) after Replacement

Process for writing programs to the flash ROM after replacement using an SD card.

11.3. Program Confirmation

Confirming program version and status by pressing SAMPLE PADS and EXECUTE buttons.

11.4. Adjusting the Display Contrast

Adjusting LCD contrast after IC23 replacement using display angle and function buttons.

Type Illustration of IC’s, Transistors and Diodes

Schematic Diagram

13.1. Schematic Diagram Notes

Notes and definitions for symbols used in the schematic diagrams.

Printed Circuit Board

14.1. CD SERVO P.C.B. test point table

Table listing test points and corresponding IC pin numbers for the CD servo PCB.

Block Diagram

Wiring Connection Diagram

Terminal Function of ICs

17.1. IC2(C2CBHH000043): / SYSTEM CONTROL / (UI Microcomputer)

Terminal functions and I/O details for the UI microcomputer IC.

17.2. IC14(C0ZBZ0000910): / MULTIMEDIA DIGITAL IMAGE PROCESSOR / (SC Microcomputer)

Terminal functions and I/O details for the SC microcomputer IC.

17.3. IC34(C0ZBZ0000910): / MULTIMEDIA DIGITAL IMAGE PROCESSOR / (MD Microcomputer)

Terminal functions and I/O details for the MD microcomputer IC.

17.4. IC1(AN8882SB-E1): / SERVO AMP.

Terminal functions and I/O details for the Servo Amp IC.

17.5. IC102 (C2BBGE000781): / SYSTEM CONTROL

Terminal functions and I/O details for the System Control IC.

Replacement Parts List

18.1. Component, Accessory, and Packaging Parts

List of components, accessories, and packaging parts with part numbers and descriptions.

18.2. CD Mechanism Parts

List of CD mechanism parts with part numbers and descriptions.

Cabinet Parts Location

CD Mechanism Parts Location

Packaging

Schematic Diagram for Printing with Letter Size

Parts Outline and Signal Explanations

Detailed Parts Outline

Covers power supply, jack, main control, panel, motor, CD unit, and LCD unit components.

UI Microcomputer Signals

Explains panel control, CD/SD switching, reverse switch, pitch control, LED, and stroboscope signals.

Main Signal Flow and Microcomputer Functions

SC Microcomputer Functions

Details audio output, LCD controls, CD shutter controls, and JTAG/DSP communication.

MD Microcomputer Functions

Communication protocols with CD unit and SDI/F.

Signal Flow Paths

Outlines signal paths for Panel, LED, Audio (CD/SD), and Turntable operations.

LCD Access Circuit

Reset Circuit Functionality

Fault Mode Analysis

The power cannot be switched on.

Troubleshooting steps for power-on issues, including fuse replacement and power supply checks.

The power can be switched on, but there is no operation.

Troubleshooting steps for no operation issues, checking LEDs, switches, and microcomputers.

Display-Related Troubleshooting

Troubleshooting steps for LCD issues like no display or incorrect characters.

CD-Related Troubleshooting

Troubleshooting steps for CD issues like no recognition or failed ejection.

SD-Related Troubleshooting

Troubleshooting steps for SD card recognition issues.

Turntable-Related Troubleshooting

Troubleshooting steps for turntable issues like no rotation, irregular rotation, or sound problems.

Audio Output Troubleshooting

Troubleshooting steps for audio output problems with LINE OUT and headphone jacks.

Analysis Points