Sony DME-7000 Maintenance Manual

Also see for BKDM-3010: Operation manual Installation manual

1-32 (E)1-11. Confirmation of Secondary PowerSupply VoltageDME-3000/7000 has a power supply of +5 V(A), +5 V(B),–5 V, and +12 V.The power indicator uses +5 V(A), and the fan uses +12 V.After installation of all required board is completed,confirm the power supply voltage inside the unit asdescribed below.Voltage measurement of +5 V(A), +5 V(B), and –5 VThe check terminals in which the probe of a digitalvoltmeter can be inserted for the voltage measurement of+5 V(A), +5 V(B), and –5 V are provided on CPU boardand VIF board.[Check procedures]1. Open the front panel.(Refer to the steps 1 and 2 in the section 2-2.)2. Confirm that the power supply unit is properly insertedand securely fixed with four screws.3. Turn on the power, and confirm that the CPU RUNindicator (*1) on CPU board lights up.(*1) : CPU RUN indicator:DME-3000: ND301(F-1) on the CPU-114 boardDME-7000: D2(J-1) on the CPU-196 board4. Remove the five screws (BVTT3 x 5), then removethe board retainer.nNever connect the digital voltmeter without removingthe board retainer. There is danger of causing a shortcircuit between the check terminals and the boardretainer.5. Connect the digital voltmeter between the checkterminals on each board. Then confirm that thevoltage values of each check terminal satisfy thespecifications.CN302CN3031 A B EFG J K L M N2345ND301A side (Component side)CDH

CPU-114 boardCN1CN2A B E F H J K L M3412CN3A side (Component side)CDG

VIF-6/9/6A/9A boardVoltage Specification Check terminal Adjustment potentiometer+5 V(A) +5.00 ±0.05 V DME-3000: CPU-114 board 1RV1CN302(+5 V) ↔ CN303(GND)DME-7000: CPU-196 boardCN802(+5 V) ↔ CN803(GND)+5 V(B) +5.00 ±0.05 V VIF-6/9/6A/9A board 1RV2CN1(+5 V) ↔ CN3(GND)–5 V –5.00 ±0.05 V VIF-6/9/6A/9A board 1RV3CN2(–5 V) ↔ CN3(GND)1-11. Confirmation of Secondary Power Supply VoltageCN8022A B E F G J K L M31A side (Component side)C D HCN803D2

CPU-196 board