Technics SLDZ 1200 Service Manual

Page 2

SL-DZ12ODPP /SL-021200EE /SL-DZIZOOEG /SL-DZ1200EP /SL-DZ1ZDOGN I

A WARNING

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 potential dangers in attempting 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.

CONTENTS

1 SaIety Precaution
2 Caution for AC Mains Lead

3 Handling Precautions for Optical pick-up .............................. 5
3.1. Handling of traverse deck optical pick-up ........................ 5
3.2. Grounding for electrostatic breakdown prevention ------------ 5

4 Precaution of Laser Diode

5 Accessories -------------------

6 Main features -------------------------------------------------------------------------- 8

7 Component part names ---------------------------------------------------------- 9
8 Operation Checks and Component Replacement Procedures

.............................................................................................. 10

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

(2) P.C.B.. ------------------------------------------------------------- 10

8.2. Checking for the main P.C.B. --------------------------------------- 10

8.3. Checking for the jack P.C.B. ----------------------------------------- 10

8.4. Checking for the power supply P.C.B.
8.5. Checking for the CD servo P.C.B. --
8.6. Replacement for the LED P.C.B., loading motor P.C.B

CD mouse ass y and motor -----------------------------

8.7. Replacement for the center panel ass ' y and LCD ------ 13
8.8. Replacement for the connection P.C.B. and sensor P.C.b.
14

8.9. Replacement for the turntable ass ' y and slip plate ass '
y -------------------------------------------------------------------------------- 14
8.10. Replacement for the control panel (2) P.C.B., button base
B and button base C. --------------------------------------------------- 16

8.11. Replacement for the control panel (1) P.C.B., reverse
switch P.C.B., button base A and button base D ----------- 16
8.12. Replacement for the CD servo P.C.B. --------------------------- 17
8.13. Replacement for the optical pick-up ------------------------------ 18

9 Technological Explanation of the Circuit and Signal
10 Sell-diagnosis Iunctio
10.1. DEVICE TEST --
10.2. TT BRAKE TEST --------------------------------------------------------- 35
10.3. TT SPEED (Phase) TEST -------------------------------------------- 35

10.4. sw & LED TEST-
10.5. LED TEST ----------

10.6. SD SAVE / LOAD ------------------------------------------------------ 37
10.7. INITIAL ------------------------------------------------------------------------ 37
10.8. CD UNIT TEST 1 ......................................................... 37

11 Cautions after Exchange of the Flash ROM (lCZa)
11.1. About obtaining the program_ .....................
11.2. Program Writing to the Flash ROM (I023) after

Replacement ............................................................. 39

11.3. Program Confirmation .................................................. 40
11.4. Adjusting the Display Contrast .............

12 Type Illustration of IC s, Transistors and D des

13 Schematic Diagram --------------------------------------------------------------- 43
18.1. Schematic Diagram Notes -------------------------------------------- 43
13.2. Schematic Diagram ------------------------------------------------------ 45

14 Printed Circuit Board ----------------------------
14.1. CD SERVO P.C.B. test point table

14.2. Printed Circuit Board ---------------------------------------------------- 63
15 Block Diagram ---------------------------------------------------------------------- 69
16 Wiring Connection Diagram -------------------------------------------------- 75
17 Terminal Function of ICS ------------------------------------------------------ 77
17.1. |02(CZCBHH000043): SYSTEM CONTROL (Ul
Microcomputer) ------------------------------------------------------------ 77
17.2. IC14(COZB20000910): MULTIMEDIA DIGITAL IMAGE
PROCESSOR (SC Microcomputer) ------------------------------- 78

17.3. ICS4(COZB20000910): MULTIMEDIA DIGITAL IMAGE
PROCESSOR (MD Microcomputer) --
17.4. IC1(AN88828B-E1): SERVO AMP.
17.5. IC102 (C2BBGE000781): SYSTEM CONTROL ------------- 83
18 Replacement Parts List --------------------------------------------------------- 85
18.1. Component, Accessory, and Packaging Parts
18.2. CD Mechanism Parts-

19 Cabinet Parts Location
20 CD Mechanism Parts Location --------------------------------------------- 97
21 Packaging ----------------------------------------------------------------------------- 98