SANYO TLS-1960P
Schematy

VIDEO CIRCUIT WAVEFORMS
K
No. Name
BUZZER VIDEO LOSS PWR CTL RS232C/485OUT FLD C SELECT RTS CLK TRS DATA RTS DATA MH-PWM MC-PWM FLD CLK FLD DATA OUT FLD DATA IN BACKUP 5V XT1 XT2 Vss X2 X1 RESET TEST/Vpp PB L N.C. RF SW P ALT OFF H B/W H I2C CLK OSD DATA /IIC DATA ROTARY H AMP SW QVD OSD CLK OSD CS 40H(24H) 24H(12H) EP H MC F/R ML-D ML-S VSS BACKUP 5V SCAN1 SCAN2 SCANP TIMER/EJECT OUT TAPE END OUT WARNING OUT CONTROL/ CLK ADJ OUT POWER UP REC H

IC301 SYSTEM CONTROL, TIMER, OSC & SERVO MPU PIN FUNCTIONS TABLE
I/O H/L Signal Function
O I O O O I O I O O O O O O I O O O O O O O O O O O O O O O O I I O O O O O O O H H H L L H H H H H H H H H H H H Buzzer drive signal. To detect the loss of video signal. 'H' while the DC power supply works. RS232C/485 select signal. 232C=H Chip enable signal to FLD control IC. Clock signal from controller CPU. Data signal to controller. Data signal from controller. Output of head drum motor servo control signal. (PWM signal) Output of capstan motor servo control signal. (PWM signal) Clock signal to FLD control IC. Data signal to FLD control IC. High output except when power is off. 5VDC Clock osc during power failures and timer. 32.768KHz Ground terminal. System clock OSC. 8MHz Initial reset terminal for this IC. Signal for indicating playback mode. RF switching pulse created by head drum PG. Signal indicating the monocrome mode. Clock to EEPROM and Y/C IC. Data I/O to OSD Y/C and EEPROM IC. Video head CH1/CH2 confirmation signal. (Used in the processing of image circuit color signals.) Video head CH1/CH2 confirmation signal. (Used in the video head amp.) Quasi vertical synchronizing signal. Clock to OSD IC. Chip enable signal to on screen display IC. Signal for indicating 40H(24H) mode. Signal for indicating 24H(12H) mode. Signal for indicating EP mode. Capstan motor rotation direction (normal/reverse) indication signal. (Reverse; H) Loading motor rotation direction indication signal. (Load; H, Brake; M, Unload; L) Loading motor speed (high/mid/low) indication signal. Ground terminal. 5VDC JOG Dial scan signal input. JOG Dial scan signal input. JOG Dial scan signal output. Timer/eject control signal output. Tape end control signal output. Warning output. Clock adjust control signal output.
RQ4QEX_IC301

No.
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

Name
SW OUT REC GATE H COMP SPECIAL H SKEW SW 2 SKEW SW 1 2H DELAY SW CONTROL/ CLK ADJ IN CFG1 CFG2 POWER DOWN ENV SW AD MUTE EXT TIMER IN ALARM RESET IN ALARM /1 SHOT IN SERIES REC / EJECT IN REC 12V DET FLSTART + SAFETY AVdd AVREF SWDATA 2 SWDATA 1 SWDATA 0 T END S T TOP S DEW S REMOTE REMOTE REF VD ENV N.C. N.C. DC LEVEL IN AVss CTL SLOPE CTL HEAD + CTL HEAD CTL IN CTL SIG OUT CTL AMP IN Vref AVss1 AVdd1 CFG IN CFG SIG OUT CFG AMP IN DPG IN DFG IN S REEL P T REEL P C SYNC

I/O H/L Signal Function
O O O O O I I I I I O I O I I I I I I I I I I I I/O I/O O I I I I I I I L H H H H L H H H H L H H L L L H H H Switch signal to multiplexer. Signal to indicate recording. Pulse signal to adjust the speed of head drum. Special mode (still, cue, etc) indication signal. 2H delay circuit control signal. Timer adjust control signal input. Capstan FG1 pulse input. Capstan FG2 pulse input. Power failure detection terminal. Output comparison signal for main head and sub head. Signal disable audio signal output. Timer recording during H input. Alarm reset signal input. Alarm / 1 shot-rec signal input. Signal to start series recording. Tape eject control signal input. Switch input indicating start of cassette loading or discharge by cassette mechanism and detecting accidental erasure prevention tab of cassette tape. Power supply for analog circuitry. Reference voltage for analog circuitry. Input of the three-bit signal that indicates mechanism operational position. (Please refer to the mechanism manual about the relation between mechanism position and switch data.) Sensor signal input for tape end detection. Sensor signal input for tape top detection. Dew sensor input pin. Remote control signal (voltage) input. Reference voltage for remote control signal. Video head envelope detection signal input for ATR function. Power supply DC voltage level is input. Ground for analog circuitry. Control pulse I/O. Control pulse I/O. Control amp feed back filter. Control amp out. Input signal from control amp. Reference voltage for servo circuitry. Ground. IC power source for analog circuitry. Capstan motor FG pulse input. Head drum PG pulse input. (Used in servo control and generate the switching pulse.) Head drum FG pulse input. (For drum servo) Supply reel moving sensor input. Take up reel moving sensor input. Composite synchronizing signal input.

K

TEST POINT LOCATION

WAVEFORM

TEST POINT LOCATION

WAVEFORM

1 2 3 4

J

IC101 PIN17 PLAY 100mV/500ns/div

IC101 PIN43,45 REC/PLAY 100mV/20µs/div

5 6 7 8 9 10

J

I

11

I

IC101 PIN20,21 REC/PLAY 100mV/20µs/div
H

IC101 PIN57,59 REC/PLAY 100mV/20µs/div

12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

H

IC101 PIN26 STILL 2V/200µs/div
G

IC101 PIN51,61 REC/PLAY 100mV/20µs/div

G

IC101 PIN28 REC/PLAY
F

IC101 PIN71,72 REC

27 28 29 30 31 32

F

1V/20µs/div 100mV/20µs/div

E

IC101 PIN29 REC/PLAY 500mV/20µs/div

IC101 PIN71,72 PLAY 100mV/20µs/div

33 34 35 36 37 38

E

D

D

IC101 PIN34,36,38 REC 200mV/20µs/div
C

IC101 PIN90 REC 1V/200ns/div

39 40 41 42 43 44 45

C

IC101 PIN41,46 REC/PLAY 100mV/20µs/div
B
WF_V_SE4

46 47 48 49 50

"H" output except the power is off. Signal for indicating recording mode.

B

A 1 2 3 4 5 6 7 8 9 10
C8

A 11 12 13 14 15 16 17 18 19