Marantz DR-6000 CD Module, Open/Close, Check Flex Connection from CDR Main Board Power Supply

7.2CD Module

CD MODULE

NO DISC

POWER ON

DISC NO

DETECTION

STARTS?

YES

NO

DISPLAY?

YES

PRESS

<OPEN/CLOSE>

CHECK FLEX CONNECTION FROM CDR MAIN BOARD

POWER SUPPLY

+5V, +12V AT TESTPOINTS 28 AND 27 +5V AT CONN. 1000 PINS 1 AND 3 +5V AT IC7005 PIN 14

+3V3 AT IC7000 PINS 5,17,21,57, CHECK SAFETY RESISTORS

+5V AT IC7020 PIN 25

+10V AT IC7020 PINS 26, 27, 28

+12V AT IC7021 PIN 5, CHECK SAFETY RESISTOR R3131

+12V AT IC7022 PIN 5, CHECK SAFETY RESISTOR R3154

+5V AT IC7025 PIN 16

+5V AT IC7202 PIN 38, CHECK SAFETY RESISTOR R3308

+3V3 AT IC7309 PINS 4 AND 13, CHECK SAFETY RESISTORS R3215, R3216 +12V AT IC7120 PIN 8, CHECK SAFETY RESISTOR R3263

CLOCKS

8.4672MHz AT TESTPOINT 7 12MHz AT TESTPOINTS 29 AND 30 11.2896 AT TESTPOINT 10 2.1168MHz AT TESPOINT 20 44.1kHz AT TESTPOINT 21

DISPLAY

SEE FAULTFINDING GUIDE DISPLAY BOARD

MICROPROCESSOR 7202

NO

TRAY?

YES

LOAD DISC

(CD-DA OR PARTIALLY RECORDED CD-R/CD-RW)

PRESS <OPEN/CLOSE>

NO

TOC?

YES

SEE NEXT PAGE:

PLAYBACK

DIAGNOSTIC SOFTWARE : MECHANICAL SERVICE DIAGNOSTICS CD LOADER : TRAY TEST

CHECK TRAY MOTOR VOLTAGES TRAY+, TRAY-

MICROPROCESSOR 7202

CHECK TRAY MOTOR DRIVER IC7021

REPLACE OR REPAIR CD LOADER ASSY:

TRAY MOTOR ASSY 02, BELT 11

DIAGNOSTIC SOFTWARE : MECHANICAL SERVICE DIAGNOSTICS CD LOADER : FOCUS TEST & SLEDGE TEST

CHECK WIRING TO CDM

CHECK POWER DRIVERS 7021, 7022, 7020

CHECK VOLTAGES ON POWER DRIVERS (SEE CIRCUIT DIAGRAMS)

TESTPOINTS 4, 5, 6 : PULSE DENSITY MODULATED SIGNALS

HF PATH

TESTPOINTS 1, 2, 3, 9 : EYEPATTERN

CHECK RW AT TESTPOINT 8 : HIGH FOR CDDA AND CDR DISC, LOW FOR CDRW DISC. EYEPATTERN OF CDRW DISC WILL BE AMPLIFIED ( »X 2.5). EYEPATTERN OF CDDA DISC WILL BE ATTENUATED(» X 0.8)

CHECK S1,S2 AT TESTPOINTS 25 AND 26 (SEE CIRCUIT DIAGRAMS) TESTPOINTS 20, 21, 22: I2S DATA, WCLK, SCLK

REPLACE OR REPAIR CD LOADER ASSY (CDM MECHANISM)

CL 96532086_030.eps 080999

Figure 7-5

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