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Perfect source for service manuals: fast and professional transaction; high quality, perfect readable and largely scaleable PDF; complete schemes, diagrams and spare part list. Tnx a lot, cu again!!!!
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This was the Sony CCU-500A Service manual I was looking for.
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Excellent printing quality.
A complete and very usefull service manual with all details.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
FUNCTION OF MICOM IC 9-2. PIN DESCRIPTIONS
PIN
1 80 78 77
PIN NAME
XIN XOUT EO1 EO2
DESCRIPTION
CONNECTION TO 4.5 MHz CRYSTAL
I/O
I O
OUTPUT COMPAIRED WITH PHASE IF LOCAL OSCILLATION FREQUENCY IS HIGHER THAN STANDARD FREQUENCY. OUTPUT IS HIGH, IF NOT OUTPUT IS LOW, AND IF SAME OUTPUT IS HIGH-Z. OUTPUT TERMINAL FOR AM 2ND CHANGE PUMP. (IF STANDARD FREQUENCY OF AM IS 90kHZ) --REFER TO ATTACHED PAGE. POWER TERMINAL
O O
71
EO3
O
76
VSS
73,31 VDD 75 74 72 70 69 FMIN AMIN SUBPD HCTR LCTR INPUT TERMINAL IF FM VCO(LOCAL OSCILLATION) INPUT RANGE: INPUT TERMINAL IF AM VCO(LOCAL OSCILLATION) INPUT RANGE: OUTPUT OF PLL LOCK UP SUB FOR SPEEDY PLL LOCK. REFER TO ATTACHED PAGE ABOUT CIRCUIT USED. INPUT TERMINAL OF FM IF COUNT INPUT RANGE : 107MHz + 30kHz, Vpp= INPUT TERMINAL OF AM IF COUNT INPUT RANGE : 450kHz + 1kHz (AM) : 450kHz + 0.37kHz (LW) Vpp= PART THAT CHECKS DAMAGE OF BACK-UP MEMORY AFTER COMING BACK TO (BACK-UP)MODE. REFER TO ATTACHED PAGE ABOUT CIRCUIT USED. CONTROL TERMINAL OF BACK UP MODE. IF INPUT IS HIGH, WORKING IS NORMAL. IF INPUT IS LOW, IT REVERTS TO BACK UP MODE. IF INPUT OF (ACC)IN IS LOW ACCORDING TO CLOCK OPTION CLOCK IS DISPLAYED. TEST PORT (CONNECTED TO GROUND) RECEIVING RDS DATA FROM RDS DEMODULATOR IC. REFER TO ATTACHED PAGE ABOUT DATA TIMING CHART. I I O I I
68
SNS_
I
67
HOLD_
I
79 2 12 11 55
TEST1 TEST2 PE2 PE3 INT1
I I I
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