SECTION 7
DIAGRAMS
7-1. BLOCK DIAGRAM – TUNER/TAPE Section –
(FM/AM ANTENNA)
HP901
(PLAYBACK)
FWD
FWD
REV
REV
BACKUP +5V
TUNER VCC
TUNER +5V
FM/AM TUNER UNIT |
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TUX100 | 11 | 5 | 16 |
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2 | 5VBU | VCC | VDD | MPX 10 | MPX | A |
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| E2PSIO- E2PCKO- | FMAGC | METERS- | RDSDET | SDA SCL |
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| AM | B | |||
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| 17 18 | 4 | 14 | 9 | 12 13 | 19 |
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| C | |
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| TAPE L | D |
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| DATA | CLOCK |
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| DATA,CLOCK |
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| E | |
| TAPE EQUALIZER AMP, |
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| DOLBY NR AMP, AMS |
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| CLOCK | DATA |
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| IC401 |
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| RV400 |
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| PBF |
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| DOLBY LEVEL (L) |
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| RDS DECODER |
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| LINE |
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| 34 IN1 |
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| IC700 |
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| OUT1 | 29 | 27 | IN1 | DOLBY |
| OUT1 | 24 |
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| SIGNAL |
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| EQ AMP | MUTE | NR AMP |
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| QUALITY |
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| DECODER |
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| SC |
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| SCL |
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| 57 kHz |
| OUT | CIN | CLOCKED | RDS/RDBS | INTERFACE | IIC BUS | 10 |
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| 18 | DEMODULATOR | SLAVE | SDA |
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| MPX | 19 | COMPARATOR | REGISTER | 9 |
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| FILTER |
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| & DECODER | TRANSCEIVER |
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| + |
| AMS |
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| MPTH |
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| BUFFER |
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| DET | AMS |
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| Q750 |
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| MULTI |
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| OSCILLATOR |
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| OUT |
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| LVIN |
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| PBR |
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| 20 | PATH |
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| IN1 |
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| DETECTOR |
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| TAPESW |
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| OSCO | DAVN |
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| DRSW |
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| INSW | DOLBY | MSSW |
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| OSCI |
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| FILTER |
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| IC750 |
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| 5 | 4 | 8 |
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| 19 |
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| NOISE DET |
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| DISCHARGE |
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| X700 |
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| SWITCH |
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| 4.332MHz |
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| Q751 |
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| MUTE |
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| SWITCH |
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| Q404 |
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| LEVEL | G |
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| 7 |
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| 120 | 3 |
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| MTLOUT |
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| DOLBY | AMSON |
| AMSIN | FM AGC | VSM | SYSTEM CONTROLLER |
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| QUALITY | NS MASK |
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| IC601 (1/4) |
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(Page 22)
(Page 22)
(Page 22)
(Page 22)
(Page 22)
(Page 22)
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| TAPEON | POS0 – POS3 | |||
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| 62 |
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| 61 60 | 59 | 64 – 67 | |
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| REEL SENSOR B+ |
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| REGULATOR | BATT B+ | ||
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| Q400 | ||||
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| REGULATOR | TAPE OPERATION |
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| 1 |
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| SWITCH | |
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| CONTROL SWITCH | ||
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| VCC |
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| Q405, 406 | EJECT/FF/REW/ | |
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| OUT1 |
| IN1 |
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| CAPSTAN/REEL |
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M901 | M | BATT B+ | LOADING/TAPE | M |
| MOTOR |
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MOTOR DRIVE |
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(CAPSTAN/REEL) | OPERATION |
| 7 | DRIVE | 4 |
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| LOADING/TAPE OPERATION |
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| Q403 |
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| MOTOR DRIVE |
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| IC400 |
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REEL
57
BUFFER
REELREEL
SENSOR SENSOR
TAPE
DETECT
REEL SENSOR BOARD
•
•SIGNAL PATH
: FM
: MW/LW
: TAPE PLAY
21 21
