Sony DPS-V55 Service Manual

Also see for DPS-V55: Guide Operating instructions

Contents

– 11 –SECTION 4TEST MODE[Operation of Test Mode]• The test mode is executed according to order the following.• Press N button, and come back the before item.1 Begin the test mode1) Press [POWER] button while Press three buttons[SYSTEM], [BYPASS] and N simultaneously.2) The self-diagnosis is executed and indicated error mes-sages in case of something wrong a hardware (See [Self-diagnosis Message]), begin the test mode in case of nodamage.Display:2 Key switch and rotary encoder check1) Press any switch button, and display a figure to button.Button Display Button Displayn 0 ENTER 4N 1 SAVE 5BYPASS 2 SYSTEM 6Fx TYPE 3 EXIT 72) Right down of display value increases like 1, 2, 3...... ifrotating JOG knob in clockwise, or decreases like 0, 9,8...... if rotating in counter clockwise.(Limit of figure: 000 to 255)Display:3 MIDI circuit check• Preparation:The MIDI cable (DIN cable) between MIDI IN connec-tor and MIDI OUT/THRU connector.(If not available this check with not connect cable)1) Press n button.(This check begin with display all figure of switch but-ton and rotary encoder position.)2) Begin the MIDI circuit check, and display result.Display: No problemCircuit problem or no connecting cable• If retry of check, Press n button, and Press N buttonwith begin.4 Signal check 1 (Bypass check mode)1) Press n button.2) Enter the bypass check mode.Analog output muting is OFF, and each channel the out-put signal as intact as input signal.Display:5 Signal check 2 (Sine wave output mode)1) Press n button.2) Enter the sine wave output mode.Each channel output jack output a sine wave 1 kHz (about7.3 Vp-p). (Input have muting)Display:6 Ending the test mode1) Press n button.2) The display change the following.Display:• Item 1 or 2 is executed at the work contents.1 Next item (A) - (E) is press [ENTER] button.(A) Change the ROM.(B) Change the battery.(C) Change the RAM.(D) Customer request is initial state.(E) Besides the above-mentioned. Repair connectedwith hardware on the main board.This case display the following few seconds, and comeup power. (Initialize is done.)Display:2 Next item (F), (G) is press [EXIT] button.(F) Hardware is not change repair.(G) Only check, such as function check.This case come up power usual. (No initialize)* * * * * * * * * * * * * * * ** * * * *switch button's figure(state of pressed all)rotary encoder count(optional value)