Revox B225 free download

File name Revox-B225 cass.pdf

o^Tfp nrmr^rs) R E I / Q X '. B225 IiILI,,OF_CgNTEyTS 1. 1-1 1*1* 1 1*1*2 1*1*3 GENERAL Index of CO olayer controls General controls Special controls Rear panel connectors page 1/i 1/1 1/2 1/3 2. 2.1 2*2 2.3 2*4 2®5 2*6 2*7 2*8 Z«9 t REMOVAL OF ASSEHBLIES Removing Removing Removing Removing Removing Removing Removing Removing Removing the tne the the the the the tne the top cover side panels individual circuit boards player mechanism display po^er t r ansf or mator drawer motor operating panel guide rods 2/1 2/1 2/1 2/1 2/2 2/2 2/1 2/3 2/3 3* 3.1 3.1®1 3*1*2 3*1.3 3*1*4 3.2 3.2*1 3^2*2 3*3 3.3^1 3*3.2 3*3*3 3«3r-4 3.3.5 3*4 3.4.1 3*4^2 3«4*3 3.5 3* t · 1 > 3»5«2 3. 5. J 3*o 3.t».l 3*6.2 CIRCUIT DESCRIPTIONS 3/1 3/1 3/1 3/2 3/2 3/3 3/3 3/4 3/4 3/4 3/4 3/5 3/5 3/6 3/6 3/6 3/6 3/6 3/6 3/7 3/7 3/7 3/7 3/7 3/3 SERVO 1 PC3 1.759.310 Stabilization of the supply voltages Orawer position detector Focus control loop Oisc motor control loop Microprocessor PC3 . 1.769.320 Microprocessor system Drawer motor control SERVO- 2 PCP 1.769*330 Radial control Radial control circuit Automatic gain control- {AGC-} circuit Offset control circuit. Track detecting circuit Preamplifier and laser PCB 1*769*100*35 Laser control Focus and radial control signals HF signal amplifier Decoder PCh l-7o^.300 D i g i t a l signal p r o c e s s i n g Digital sine-wave generator HFL and 0 J detector OAC TC3 1.769.23 3 digital filtering (oversampl ing) and 0/A conversion Level adjustment and headphones amplifier mmmm eel/ox B225 *· 4 i 4«-l»l 4.1.2 4.1.3 4.1.4 4.1.5 4®2 4.2.1 4.2.2 4*2®3 4.2.4 4«Z*5 4*2*6 4*»2#7 4.3 4*3.1 4*3#2 4.3.3 4.3*4 4.3.5 4.3.6 4.3.7 4.3.3 4.4 TEST POINTSt ADJUSTMENTS OH E225 4/1 4/1 4/3 4/4 4/6 4/8 4/9 4/9 4/9 4/9 4/9 4/10 4/10 4/11 4/11 4/i1 4/11 4/11 4/11 4/12 4/12 4/12 4/12 4/12 Test points on 622^ Test points on SERVO I PCB 1«?69*310 Test points on SERVO 2 PCB 1.769.330 Test points on microprocessor PCB 1.769*320 Test points on decoder PCB 1.769.300 Test points on 0AC- PCB 1.769.260 Adjustments on CO player B225 Aids Aligning the player mechanism? general Adjusting the laser current Adjusting the balance Adjusting the focus gain Checking the -tingle alignment Adjusting the DC component of the focus signal Measuring the audi.o data A i 4s Harmonic distortion Output level Frequency response Cross talk Signal-to-noise ratio* linear Signal-to-noise ratio? weighted Phase linearity Listening test with reference CO ' 5* DIAGRAMS 6. SPARE PARTS 7* 7.1 7«Z TECHNICAL APPENDIX Technical data Dimensions 7/1 7/2" R^/ax B225 1. 1.1 GENERAL I n d e x of CD p l a y e r controls 1.1.1 General controls 1 Ij POWER * Key for switching the CD player ON and OFF. However, certain assemblies (such as the IR receiver) remain always switched" on (in so-called standby m o d e ) . The drawer with the player mechanism [ 2 j LOAD [6j opens or closes when this key is pressed. [ 3 J STOP * Interrupts the player function. The optical laser head is retra