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| SECTION 7 |
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| DIAGRAMS |
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BLOCK DIAGRAM – TUNER/TAPE Section – |
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| BACKUP +5V |
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| TUNER VCC |
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| TUNER +5V |
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| FM/AM TUNER UNIT |
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| J1 |
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| 11 | 5 | 16 |
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(FM/AM ANTENNA) | 2 |
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| 5VBU | VCC | VDD |
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| MPX | 10 |
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| MPX | A | (Page 18) | |||
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| 1 |
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| SDL | SCL |
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| MUTING |
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| Q22 |
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| EEPROM | EEPROM | AGCFM | RDSDET |
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| SDA SCL |
| 8 |
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| AM | B | (Page 18) | ||||||||
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| 17 18 | 4 | 14 | 9 | 12 13 | 19 |
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| MUTING |
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| Q21 | MUTING CONTROL |
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| SWITCH |
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| D20 | Q20 |
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| BUFFER |
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| Q50 |
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| C | (Page 18) | |
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| TAPE L | D | (Page 18) |
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| CLOCK |
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| DATA |
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| DATA,CLOCK | E | (Page 18) | |
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| TAPE EQUALIZER AMP, |
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| DOLBY NR AMP, AMS |
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| CLOCK | DATA |
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| HP901 |
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| RV230 |
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(PLAYBACK) | PBF |
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| DOLBY LEVEL (L) |
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| PB | TAPE |
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| LINE |
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| RDS DECODER |
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FWD |
| IN1 |
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| IC50 |
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| 34 |
| EQ AMP | OUT1 | 27 | IN1 | DOLBY |
| OUT1 |
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| QUALITY |
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| 29 | MUTE | NR AMP |
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| DECODER | 4 |
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FWD |
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| 57 kHz |
| SC |
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| IIC BUS | SCL |
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| 18 | 19 |
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| MPX | FILTER |
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| COMPARATOR | & DECODER | REGISTER | TRANSCEIVER |
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REV |
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| 32 |
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| MULTI |
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| 20 | PATH |
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| IN1 |
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| DETECTOR |
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REV |
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| 5 | 4 | 8 |
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| 19 | 18 |
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| NOISE DET |
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| 4.332MHz |
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| LEVEL | F | (Page 18) |
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| 7 | 57 |
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| QUALITY | NS MASK | TUNATT |
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| IC600 (1/4) |
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| 61 |
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| REEL SENSOR B+ |
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| REGULATOR | BATT B+ | ||
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| Q203 | ||||
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| REGULATOR | TAPE OPERATION |
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| VCC |
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| OUT1 | IN1 |
| Q202 | EJECT/FF/REW/ | |
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| CAPSTAN/REEL |
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| 9 | MOTOR |
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M901 | M | BATT B+ | LOADING/TAPE | M | OUT2 | 3 |
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MOTOR DRIVE |
| DRIVE | IN2 |
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(CAPSTAN/REEL) |
| Q204 |
| OPERATION |
| 7 |
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| LOADING/TAPE OPERATION |
05 | Q205 | MOTOR DRIVE |
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| IC201 |
REEL
58
BUFFER
REEL REEL
SENSOR SENSOR
TAPE
DETECT
REEL SENSOR BOARD
•SIGNAL PATH
:FM
: MW/LW
: TAPE PLAY
17 17